Molypermalloy High Flux Kool Since 1949, MAGNETICS, division Span
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Molypermalloy High Flux Kool
Since 1949, MAGNETICS, division Spang Company, been leading world supplier precision, high quality, magnetic components materials electronics industry. Applications these products range from simple chokes transformers used telephone equipment sophisticated devices aerospace electronics. Staffed with high degree technical talent coupled with modern research facilities, MAGNETICS followed carefully charted course find fill specialized industrial needs while pioneering designs, product developments, innovations manufacturing methods. Many these developments have resulted acceptance MAGNETICS products industry standards tape wound cores, powder cores, ferrite cores.
LITERATURE AVAILABLE www.mag-inc.com
PRODUCT LITERATURE DESIGN SOFTWARE
CONTAINS Product Literature Common Mode FIlter Design Software Current Transformer Design Software Inductor Design Software Design Software
POWDER CORE LITERATURE
MPP-Q1 MPP-T1 KMC-S1 KMC-E1 CG-03 FC-601 FC-S1 FC-S2 FC-S3 FC-S4 FC-S5 FC-S7 FC-S8 CG-01 Q-Curves Cores THINZ Technical Bulletin Kool Application Notes Kool Core Technical Bulletin Cores Flybacks Design Manual Ferrite Material Selection Guide EMI/RFI Common Mode Filters Curves Ferrite Cores Step E-cores, Swinging Chokes Common Mode Inductors Curve Equations Ferrite Materials Designing with Planar Ferrite Cores Critical Comparison Ferrites with other Magnetic Materials Design Manual Fundamentals Tape Wound Core Design Select Proper Core Saturating Transformers Inverter Transformer Core Design Material Selection Control SMPS Reduction Control-loop Interactions Amps
CONTENTS
SECTION
GENERAL INFORMATION
Introduction Applications Core Identification General Powder Core Information
FERRITE LITERATURE
SECTION
CORE SELECTION
Core Selection Procedure Core Selection Example Temperature Rise Calculations Core Selector Charts
TAPE WOUND CORE LITERATURE
TWC-500 TWC-S1 TWC-S2 TWC-S3 SR-4 SR-6
SECTION
TECHNICAL DATA
Material Properties Conversion Tables Normal Magnetization Curves Core Loss Density Curves 3-12 Permeability versus Temperature Curves 3-15 Permeability versus Bias Curves 3-17 Permeability versus Flux Curves 3-19 Permeability versus Frequency Curves 3-21 Wire Table
CORE LITERATURE
MCC-100T Design Manual
BOBBIN CORE LITERATURE
BCC-1.1 APB-2 CG-04 CG-02 CG-05 CG-06 TID-100 SR-1A PS-01 PS-02 HED-01 RC-1 MPB-1 SSM-6 SSM-7 SSM-8 SSM-9 SSM-10 Design manual Products Bulletin Testing Magnetic Cores Material Selection Charts Frequency, Temperature, Geometry, Stability Frequently Asked Questions About MAGNETICS Materials Designing With Magnetic Cores High Temperature Power Transformer Inductor Design Inductor Design Switching Regulators Cores SMPS Magnetic Cores Switching Power Supplies Cores Hall Effect Devices Cores Ground Fault Interrupters Spang Metals Product Bulletin Permalloy MuMetal Alloy Magnetic Shielding Materials Magnesil-N "Thin Gauge" Non-Oriented Silicon Steel
GENERAL INFORMATION
SECTION SECTION
CORE DATA
Toroid Data 4-31 Kool Core Data 4-33 THINZData
HARDWARE
Toroid Mounts Kool Core Hardware
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Core Locator Unit Pack Quantity
55014-A2 55015-A2 55016-A2 55017-A2 55018-A2 55019-A2 55020-A2 55021-A2 55022-A2 55023-A2 55024-A2 55025-A2 55026-A2 55027-A2 55028-A2 55029-A2 55030-A2 55031-A2 55032-A2 55033-A2 55034-A2 55035-A2 55036-A2 55037-A2 55038-A2 55039-A2 55040-A2 55041-A2 55042-A2 55043-A2 55044-A2 55045-A2 55046-A2 55047-A2 55048-A2 55049-A2 55050-A2 55051-A2 55052-A2 55053-A2 55059-A2 55071-A2 55076-A2 55082-A2 55083-A2 55084-A2 55086-A2 55087-A2 55088-A2 55089-A2 55090-A2 55091-A2 55092-A2 55103-A2 55104-A2 55106-A2 55107-A2 55108-A2 55109-A2 55110-A2 55111-A2 55112-A2 55114-A2 55115-A2 55116-A2 55117-A2 55118-A2
PAGE
4-11 4-11 4-11 4-11 4-11 4-11 4-11 4-11 4-11 4-11 4-13 4-13 4-13 4-13 4-13 4-13 4-13 4-13 4-13 4-13 4-17 4-20 4-22 4-25 4-23 4-25 4-25 4-25 4-25 4-25 4-25 4-25 4-25 4-28 4-28 4-28 4-28 4-28 4-56 4-28 4-28 4-28 4-14 4-14 4-14 4-14 4-14
2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000 2500 2500 2500 2500 2500
55119-A2 55120-A2 55121-A2 55122-A2 55123-A2 55124-A2 55125-A2 55127-A2 55128-A2 55129-A2 55130-A2 55131-A2 55132-A2 55133-A2 55134-A2 55135-A2 55137-A2 55138-A2 55139-A2 55140-A2 55144-A2 55145-A2 55147-A2 55148-A2 55149-A2 55150-A2 55174-A2 55175-A2 55177-A2 55178-A2 55179-A2 55180-A2 55181-A2 55190-A2 55191-A2 55192-A2 55195-A2 55196-A2 55197-A2 55198-A2 55199-A2 55200-A2 55201-A2 55202-A2 55203-A2 55204-A2 55205-A2 55206-A2 55208-A2 55209-A2 55234-A2 55235-A2 55236-A2 55237-A2 55238-A2 55239-A2 55240-A2 55241-A2 55242-A2 55243-A2 55248-A2 55249-A2 55250-A2 55251-A2 55252-A2 55253-A2 55254-A2
PAGE
4-14 4-14 4-14 4-14 4-14 4-12 4-12 4-12 4-12 4-12 4-12 4-12 4-12 4-12 4-27 4-27 4-27 4-27 4-27 4-27 4-27 4-27 4-16 4-16 4-16 4-16 4-16 4-16 4-16 4-16 4-16 4-23 4-23 4-23 4-23 4-23 4-23 4-23
2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1550 1550 1550 1550 1000 1000 1000 1000 1000 1000 1000 1000 1000 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500
55256-A2 55257-A2 55264-A2 55265-A2 55266-A2 55267-A2 55268-A2 55269-A2 55270-A2 55271-A2 55272-A2 55273-A2 55274-A2 55275-A2 55276-A2 55277-A2 55278-A2 55279-A2 55280-A2 55281-A2 55282-A2 55283-A2 55284-A2 55285-A2 55286-A2 55287-A2 55288-A2 55289-A2 55290-A2 55291-A2 55292-A2 55293-A2 55304-A2 55305-A2 55306-A2 55307-A2 55308-A2 55309-A2 55310-A2 55312-A2 55313-A2 55318-A2 55319-A2 55320-A2 55321-A2 55322-A2 55323-A2 55324-A2 55326-A2 55327-A2 55344-A2 55345-A2 55347-A2 55348-A2 55349-A2 55350-A2 55351-A2 55352-A2 55353-A2 55374-A2 55375-A2 55377-A2 55378-A2 55379-A2 55380-A2 55381-A2 55382-A2
PAGE
4-23 4-23 4-10 4-10 4-10 4-10 4-10 4-10 4-10 4-10 4-10 4-10 4-17 4-17 4-17 4-17 4-17 4-17 4-17 4-17 4-17 4-22 4-22 4-22 4-22 4-22 4-22 4-22 4-22 4-22 4-18 4-18 4-18 4-18 4-18 4-18 4-18 4-18 4-18 4-15 4-15 4-15 4-15 4-15 4-15 4-15 4-15
2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000 1000 1000 1000 1000 1000 1000 1000 1000 2500 2500 2500 2500 2500 2500 2500 2500
55383-A2 55404-A2 55405-A2 55407-A2 55408-A2 55409-A2 55410-A2 55411-A2 55412-A2 55413-A2 55432-A2 55433-A2 55435-A2 55436-A2 55437-A2 55438-A2 55439-A2 55440-A2 55441-A2 55542-A2 55543-A2 55544-A2 55545-A2 55546-A2 55547-A2 55548-A2 55550-A2 55551-A2 55579-A2 55580-A2 55581-A2 55582-A2 55583-A2 55584-A2 55585-A2 55586-A2 55587-A2 55588-A2 55709-A2 55710-A2 55712-A2 55713-A2 55714-A2 55715-A2 55716-A2 55717-A2 55718-A2 55848-A2 55866-A2 55867-A2 55868-A2 55869-A2 55894-A2 55906-A2 55907-A2 55908-A2 55909-A2 55924-A2 55925-A2 55926-A2 55927-A2 55928-A2 55929-A2 55930-A2 55932-A2 55933-A2
PAGE
4-15 4-24 4-24 4-24 4-24 4-24 4-24 4-24 4-24 4-24 4-20 4-20 4-20 4-20 4-20 4-20 4-20 4-20 4-20 4-21 4-21 4-21 4-21 4-21 4-21 4-21 4-21 4-21 4-21 4-26 4-26 4-26 4-26 4-26 4-26 4-26 4-26 4-26 4-16 4-29 4-29 4-29 4-29 4-19 4-30 4-30 4-30 4-30 4-19 4-19 4-19 4-19 4-19 4-19 4-19 4-19 4-19
2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000
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General Information
High Flux Core Locator Unit Pack Quantity
58018-A2 58019-A2 58020-A2 58021-A2 58022-A2 58023-A2 58028-A2 58029-A2 58030-A2 58031-A2 58032-A2 58033-A2 58038-A2 58039-A2 58040-A2 58041-A2 58042-A2 58043-A2 58048-A2 58049-A2 58050-A2 58051-A2 58052-A2 58053-A2 58059-A2 58071-A2 58076-A2 58083-A2 58089-A2 58090-A2 58091-A2 58092-A2 58109-A2 58110-A2 58111-A2 58112-A2 58118-A2 58119-A2 58120-A2 58121-A2 58122-A2 58123-A2 58128-A2 58129-A2 58130-A2 58131-A2 58132-A2 58133-A2 58190-A2 58191-A2
PAGE
4-11 4-11 4-11 4-11 4-11 4-11 4-13 4-13 4-13 4-13 4-13 4-13 4-17 4-20 4-22 4-23 4-25 4-25 4-25 4-25 4-28 4-28 4-28 4-28 4-14 4-14 4-14 4-14 4-14 4-14 4-12 4-12 4-12 4-12 4-12 4-12 4-27 4-27
2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500
58192-A2 58195-A2 58204-A2 58205-A2 58206-A2 58208-A2 58209-A2 58238-A2 58239-A2 58240-A2 58241-A2 58242-A2 58243-A2 58252-A2 58253-A2 58254-A2 58256-A2 58257-A2 58268-A2 58269-A2 58270-A2 58271-A2 58272-A2 58273-A2 58278-A2 58279-A2 58280-A2 58281-A2 58282-A2 58283-A2 58288-A2 58289-A2 58290-A2 58291-A2 58292-A2 58293-A2 58308-A2 58309-A2 58310-A2 58312-A2 58313-A2 58322-A2 58323-A2 58324-A2 58326-A2 58327-A2 58348-A2 58349-A2 58350-A2 58351-A2
PAGE
4-27 4-27 4-16 4-16 4-16 4-16 4-16 4-23 4-23 4-23 4-23 4-23 4-10 4-10 4-10 4-10 4-10 4-10 4-17 4-17 4-17 4-17 4-17 4-22 4-22 4-22 4-22 4-22 4-18 4-18 4-18 4-18
1000 1000 1000 1000 1000 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000 1000 1000 1000 1000
58352-A2 58353-A2 58378-A2 58379-A2 58380-A2 58381-A2 58382-A2 58383-A2 58408-A2 58409-A2 58410-A2 58411-A2 58412-A2 58413-A2 58438-A2 58439-A2 58440-A2 58441-A2 58546-A2 58547-A2 58548-A2 58550-A2 58551-A2 58583-A2 58584-A2 58585-A2 58586-A2 58587-A2 58588-A2 58715-A2 58716-A2 58717-A2 58718-A2 58848-A2 58866-A2 58867-A2 58868-A2 58869-A2 58894-A2 58906-A2 58907-A2 58908-A2 58909-A2 58928-A2 58929-A2 58930-A2 58932-A2 58933-A2
PAGE
4-18 4-18 4-15 4-15 4-15 4-15 4-15 4-15 4-24 4-24 4-24 4-24 4-20 4-20 4-20 4-20 4-20 4-21 4-21 4-21 4-21 4-21 4-21 4-26 4-26 4-26 4-26 4-16 4-29 4-29 4-29 4-29 4-19 4-30 4-30 4-30 4-30 4-19 4-19 4-19 4-19 4-19
2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000
Hardware
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Kool Core Locator Unit Pack Quantity
77020-A7 77021-A7 77030-A7 77031-A7 77040-A7 77041-A7 77050-A7 77051-A7 77054-A7 77055-A7 77059-A7 77071-A7 77076-A7 77083-A7 77089-A7 77090-A7 77091-A7 77093-A7 77094-A7 77109-A7 77110-A7 77111-A7 77120-A7 77121-A7 77130-A7 77131-A7 77140-AY 77141-AY 77150-AY 77151-AY 77154-AY 77155-AY 77180-AY 77181-AY 77184-AY 77185-AY 77191-A7 77192-A7 77193-A7 77194-A7 77195-A7 77206-A7
PAGE
4-11 4-11 4-13 4-13 4-13 4-13 4-17 4-20 4-22 4-23 4-25 4-25 4-25 4-25 4-25 4-28 4-28 4-28 4-14 4-14 4-12 4-12 4-27 4-27 4-27 4-27 4-27 4-16
2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000 2500 2500 2500 2500 1550 1550 1000
77210-A7 77211-A7 77213-A7 77214-A7 77224-A7 77225-A7 77240-A7 77241-A7 77244-A7 77245-A7 77254-A7 77256-A7 77258-A7 77259-A7 77270-A7 77271-A7 77280-A7 77281-A7 77290-A7 77291-A7 77294-A7 77295-A7 77310-A7 77312-A7 77314-A7 77315-A7 77324-A7 77326-A7 77328-A7 77329-A7 77334-A7 77335-A7 77350-A7 77351-A7 77352-A7 77354-A7 77355-A7 77380-A7 77381-A7 77384-A7 77385-A7 77410-A7
PAGE
4-16 4-16 4-28 4-28 4-14 4-14 4-23 4-23 4-23 4-23 4-10 4-10 4-10 4-10 4-17 4-17 4-17 4-17 4-22 4-22 4-22 4-22 4-12 4-12 4-18 4-18 4-18 4-18 4-18 4-15 4-15 4-15 4-15
1000 1000 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 1000 1000 1000 1000 2500 2500 2500 2500 2500 2500 2500
77411-A7 77414-A7 77415-A7 77438-A7 77439-A7 77440-A7 77442-A7 77443-A7 77444-AY 77445-AY 77548-A7 77550-A7 77552-A7 77553-A7 77585-A7 77586-A7 77587-A7 77589-A7 77590-A7 77715-A7 77716-A7 77717-A7 77719-A7 77720-A7 77824-A7 77825-A7 77834-A7 77835-A7 77844-A7 77845-A7 77848-A7 77868-A7 77874-A7 77875-A7 77884-A7 77885-A7 77894-A7 77908-A7 77930-A7 77932-A7 77934-A7 77935-A7
PAGE
4-24 4-24 4-24 4-24 4-24 4-16 4-16 4-20 4-20 4-20 4-20 4-21 4-21 4-21 4-21 4-21 4-26 4-26 4-26 4-26 4-26 4-11 4-11 4-16 4-29 4-19 4-30 4-19 4-19 4-19 4-19
2500 2500 2500 1550 1550 2500 2500 2500 2500 2500 2500 1000 2500 2500 2500 2500
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General Information
Introduction
MAGNETICS Molypermalloy Powder (MPP) cores distributed toroidal cores made from nickel, iron, molybdenum alloy powder lowest core losses powder core material. cores possess many outstanding magnetic characteristics, such high resistivity, hysteresis eddy current losses, excellent inductance stability after high magnetization under high bias conditions minimal inductance shift 2000 gausses under conditions. MAGNETICS High Flux powder cores distributed toroidal cores made from nickel iron alloy powder highest available biasing capability powder core material. High Flux cores have certain advantages that make them quite useful applications involving high power, high bias, high bias high power frequencies. High Flux cores have saturation flux density 15000 gauss, compared 7500 gauss standard cores 4500 gauss ferrites. core loss High Flux powder cores significantly lower than that powdered iron cores. possible that High Flux cores will offer reduction core size over powdered iron cores most applications. MAGNETICS Kool powder cores distributed cores made from ferrous alloy powder losses elevated frequencies. near zero magnetostriction alloy makes Kool ideal eliminating audible frequency noise filter inductors. high frequency applications, core losses powdered iron, instance, major factor contributing undesirable temperature rises. Hence, Kool cores ideal because their losses significantly less, resulting lower temperature rises. possible that Kool cores will offer reduction core size over powdered iron cores similar application.
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Kool Cores have distributed which makes them ideally suited switching regulator inductors, flyback transformers, power factor correction (PFC) inductors. 10,500 gauss saturation level Kool provides higher energy storage capability than obtained with gapped ferrite cores, resulting smaller core size. Kool cores competitively priced against gapped ferrite cores their distributed eliminates loss problems associated with ferrites. Kool cores have significantly lower losses substantially better thermal properties when compared powdered iron cores. THINZTM, Molypermalloy Powder washer cores, distributed gapped toroidal cores made from nickel, iron, molybdenum alloy powder having highest permeability powder core material significantly higher saturation flux density compared discrete gapped ferrite. THINZoffer extremely height self shielded power inductor core allowing finished inductor heights range. Excellent temperature stability, superior inductance under bias, core losses highlight this product line's outstanding magnetic properties.
Hardware
Applications
MAGNETICS powder cores primarily used power inductor applications, specifically switch-mode power supply (SMPS) output filters, also known Inductors. Other power applications include differential inductors, boost inductors, buck inductors, flyback transformers. While three materials used these applications, each it's advantage. lowest loss inductor, material should used since lowest core loss. smallest core size bias dominated design, High Flux material should used since highest flux capacity. reasonably losses reasonably high saturation cost, Kool should used since lowest material costs. Other specialty applications, such High level filters, load coils, temperature stabilized inductors, material used.
High Flux
Kool
Core Loss Perm Bias Flux Density (Gauss) Nickel Content Relative Cost
Lowest Better 7,500 High
Moderate Best 15,000 Medium
Good 10,500
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General Information
Core Identification
MAGNETICS powder cores marked with part number which identifies properties core finish. cores also stamped with date code, ensuring traceability core history performance characteristics. Cores smaller than 0.250" stamped. Cores with between .250" .310" stamped with catalog number (three digits).
TOROIDS 206-
Core finish: Coating Coating Coating Coating Parylene-C Coating Coating Coating Coating 1000 4000 Kool High Flux High Flux High Flux MPP, High Flux Kool vbd, Temperature Stabilized vbd, Linear Stabilized vbd, Temperature Stabilized vbd, Temperature Stabilized
Catalog number designates size permeability Material Code High Flux Kool
CORES 5528-E060
Permeability Code .First digit always .Last three digits equal permeability, e.g. E060 Size Code .First digits equal approximate length .Last digits equal approximate height Material Code Kool
THINZ M-0301-T125
Permeability Code .First digit always .Last three digits equal permeability, e.g. T125 125µ Size Code .First digits equal approximate outside diameter .Last digits equal approximate inside diameter Material Code
Hardware
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Core Inductance Tolerance/Grading
MAGNETICS powder cores cores precision manufactured inductance tolerance ±8%*, using standards obtained from Kelsall Permeameter measurements precision series inductance bridge. Except where noted specific part numbers, High Flux Cores graded into inductance bands standard practice additional charge. Grading into bands available certain sizes special request. Core grading minimizes winding adjustments, thus reduces coil costs. When bands required, wound cores must processed inductance stability (see Page 1-8). Graded MAGNETICS High Flux cores also available with tolerances less than standard ±8%. Please contact plant special pricing.
GRADE Stamped Core INDUCTANCE Deviation from Nominal From TURNS Deviation from Nominal From
-4.0 -3.5 -3.5 -0.5 -0.5 +0.5 +1.5 +2.5 +3.5
-3.5 -2.5 -1.5 +0.5 +0.5 +1.5 +2.5 +3.5 +4.0
Kool cores with outside diameters less than 12mm have wider tolerances.
Core Finish
MAGNETICS powder cores coated with special finish that provides tough, tight, moisture chemical resistant barrier having excellent dielectric properties. Each material unique color coating: Gray High Flux Khaki Kool Black finish tested voltage breakdown inserting core between weighted wire mesh pads. Force adjusted produce uniform pressure psi, simulating winding pressure. test condition guarantee minimum breakdown voltage (500 volts from wire core) voltage equal times minimum 1250 volts wire wire). Higher minimum voltage breakdown finishes provided upon request. Cores large 0.650" coated with parylene minimize constriction inside diameter dimensions. parylene coating minimum breakdown voltage guarantee volts from wire core (tested volts wire wire Hz). finished dimensions this catalog color coating. When choosing parylene coated core, maximum reduced 0.18 (0.007"), minimum increased 0.18 (0.007"). maximum steady-state operating temperature coating 200°C. maximum steady-state operating temperature parylene coating 130°C, used high 200°C short periods, such during infrared solder reflow. High temperature operation cores does affect magnetic properties.
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General Information
Inductance versus Turns
MAGNETICS inductance standards measured Kelsall Permeameter Cup. Actual wound inductance measured outside Kelsall greater than calculated value leakage flux flux developed current winding. difference depends many variables core size, permeability, core finish thickness, wire size, number turns, addition which windings core. This difference negligible permeabilities above turns greater than 500. However, lower permeability and/or number turns, more pronounced this deviation becomes. following table presented guide differences that experienced with various numbers turns 1-inch O.D. 125µ core: Number Turns 1000 Actual Inductance +0.0% +0.5% +1.0% +3.0% +5.0% +8.5%
following formula used approximate leakage flux expected inductance. This formula developed from historical data cores tested MAGNETICS. aware that this will only give approximation based evenly spaced windings. expect much ±50% deviation from this result.
N1.065Ae
where
leakage inductance (mH) number turns core cross-section (cm2) core magnetic path length (cm)
Inductance Considerations
inductance wound core calculated from core geometry using following equation:
µN2Ae
where
inductance (Henries) core permeability number turns core cross section (cm2) core magnetic path length (cm)
inductance given number turns related nominal inductance listed catalog mH/1000 turns) following:
Hardware
L1000N2
where inductance turns (mH) L1000 nominal inductance (mH/1000 turns)
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Temperature Linear Stabilization
(Only applies cores)
MAGNETICS cores provided three basic temperature stabilizations; Standard, Controlled, Linear. Typical guaranteed inductance limits these temperature stabilizations illustrated following pages. Standard cores offered with three different finishes Controlled Linear cores offered with finish, respectively. page further finish information. inductance cores affected temperature changes, which cause variations amount distributed (insulating material). expansion characteristics powdered metal, insulating material, core finish contribute inductance change arising from temperature changes. temperature coefficient inductance controlled addition small percentage special compensating alloys, which have curie points within temperature range being controlled. When each curie point exceeded, these particles become non-magnetic additional gaps; thus change inductance minimized over predetermined temperature range. cores thus utilized precision circuits requiring extremely high inductance stability over wide temperature ranges.
MAGNETICS standard cores Stabilization) offer expected temperature performance shown page 1-7. guaranteed temperature performance necessary, Controlled Linear cores recommended. MAGNETICS 550µ cores available only standard cores. MAGNETICS cores offered three controlled stabilizations, provide high levels inductance stability over temperature chart listed below. Stabilization effective only initial permeability when cores driven induction (<100 gauss). cores also offered with linear temperature characteristics, type Linear cores provide temperature coefficient, from -55°C +85°C, which matched with 100ppm polystyrene capacitor yield extremely stable tuned circuits. Temperature coefficient values referenced 25°C. temperature stability cores affected external factors such moisture, winding stresses potting compounds. These effects minimized using suitable stability procedures during coil fabrication process. Please inductance stability considerations page 1-8.
STABILIZATION CODE
INDUCTANCE STABILITY LIMITS Below Gauss
INDUCTANCE STABILITY TEMPERATURE RANGE
0.25% 0.25% 0.10%
-65°C +125°C -55°C +85°C +55°C
cores meet core limits substituted place
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General Information
Temperature Linear Stabilization
(Only applies cores)
Part Suffix Stabilization Type Inductance Stability Limits Stabilized Temperature Range Guaranteed Minimum Breakdown*
*From wire bare core
Standard Standard Standard Standard Controlled Controlled Controlled Linear
**except cores smaller than .200"
Page 3-12 Page 3-12 Page 3-12 Page 3-12 +0.1% +.25% +.25% Below
+55°C +32°F 130°F -55°C +85°C -67°F +185°F -65°C +125°C -85°F +257°F -55°C +85°C -67°F 185°F
volts** volts 1000 volts 4000 volts*** volts volts volts volts
***Add .015" subtract .015" from finished core dimensions chart shown core data pages.
Linear Cores Guaranteed Limits
Unit Initial Permeability
1.015 1.010 1.005 1.000 0.995 0.990 0.985
Minimum Limit 300µ, PPM/
Maxim
Limit
imum
Limit
Hardware
Temperature,
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Inductor Stabilization Procedure
(Only applies cores)
MAGNETICS cores possess excellent inductance/ time stability. Under typical shelf life conditions inductance unpotted core will shift less than 0.5%. maximum stability desired, following precautions procedures will remove winding stresses core moisture provide inductance stabilities better than 0.05%. Wind cores approximate specified inductance (slightly over desired value). Cool wound cores -60°C. Maintain temperature minutes help relieve winding stresses caused high winding tension, large wire, many turns. Heat cores slowly (<2°C/minute) 115°C. Maintain temperature minutes. Steps should repeated twice.
Bake 115°C hours. Cool room temperature adjust turns obtain specified inductance. Cores must kept until potted hermetically sealed. cores potted, they should covered first with cushioning material, such silicone rubber. This material minimizes possibility potting compound stressing core changing inductance value. Potting compounds should chosen with care, even semi-flexible resins cause core stresses reduce stability. Selection should based minimum shrinkage minimum moisture absorption.
Winding Considerations
Winding Factors
MAGNETICS core winding factors vary from 60%, typical value many applications being 40%. MAGNETICS chosen normalize winding data basing Rdc, ohm/mh, winding-turn-length unity winding factor. This approach provides coil designer with means calculating realistic design parameters choice winding factor. Please note that unity values theoretical values, attainable practice. highest winding factor possible, even with hand winding, 75%, spacing between turns wire.
Wound Coil Dimensions
Wound coil dimensions listed unity winding factor, these largest dimensions necessary packaging wound coil. These dimensions attainable, winding factor residual hole) yields same overall coil dimensions 100% (unity) winding factor interstices). Coil dimensions coils wound winding factor estimated follows:
OD40% (ODcore ODunity)
where ODcore core after finish ODunity wound coil
Winding Turn Length
Winding turn lengths have been computed, using empirical relationships, five winding factors. This permits estimate actual length/turn winding factor.
Hgt40%= (Hgtcore Hgtunity)
where Hgtcore core after finish Hgtunity wound coil
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General Information
Nominal Resistance
Nominal Resistance, ohms/millihenry (listed core size pages), useful calculating winding resistance (Rdc) value inductance. value nominal Resistance essentially independent wire size number turns wire. value Nominal Resistance given winding factor computed follows:
/mhwf
where /mhwf /mhu
chosen winding factor unity value, listed each core size chosen winding factor length/turn chosen length/turn unity (100%)
*see "Winding Turn Length" core size pages
value given winding factor computed follows:
Rdcwf Rdcu dcwf
where Rdcwf Rdcu
chosen winding factor unity value, listed each size (ohms) chosen winding factor length/turn chosen length/turn unity (100%)
Sample Calculation
Using 55930 core, calculate value winding factors follows, using parameter values listed page 4-19:
/mh40%
/mhu .0524 .1344 .103/mh .1714
value ohms/mh yields value ohms (50mh .103) value 55930 core also obtained noting unity values wire (i.e. 1400 turns 15.67 ohms) converted winding factor values follows:
N40% Nunity 1400 turns
K40% Rdc40% Rdcu .1344 15.67 .1714 ohms
Hardware
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Core Selector Charts
core selector charts will quickly yield optimum permeability smallest core size bias applications. These charts based permeability reduction more than with bias, typical winding factors 40%, current, which small relative current. These charts based minimum inductance tolerance chosen core size permeability. core being chosen with large current relative current, such flyback inductor buck/boost inductor, select core that sizes larger than indicated selector charts. This will assist reducing operating flux density current that generates core loss. additional power handling capability, LI2, multiple stacking cores will yield equivalent multiple power handling given core size. example, double stacking 55908-A2 core will result doubling power handling capability about 1000 mH-amperes2.
Core Selection Procedure
Only parameters design application must known: inductance required with bias current. following procedure determine core size number turns. Compute product where: inductance required with bias (millihenrys) current (amperes) Locate value Core Selector Chart (page 2-4). Follow this coordinate intersection with first core size that lies above diagonal permeability line. (Small core sizes bottom; large core sizes top.) This smallest core size that used. permeability line sectioned into standard available core permeabilities. Selecting permeaability indicated will yield smallest core that used. Lower higher permeabilities used, resulting core size will larger. Inductance, core size, permeability known. Calculate number turns using following procedure: nominal inductance 1000 turns) core obtained from core data sheet. Determine minimum nominal inductance using worst case negative tolerance (-8%, -12%, -15%, depending core size). With this information, calculate number turns needed obtain required inductance (see Inductance Considerations, page 1-5). Calculate bias oersteds from: NI/le From Permeability Bias curves (page 3-15, 3-16, 4-33, 4-35), determine rolloff unit initial permeability (µpu) previously calculated bias level. Increase number turns dividing initial number turns (from step unit value initial permeability. This will yield inductance close required value. final adjustment turns necessary specific inductance required. Choose correct wire size using Wire Table (page 3-21). Duty cycles below 100% allow smaller wire sizes lower winding factors, allow smaller core sizes. core chosen will have inductance equal greater than that required when biased with specified current. resulting winding factor will between 45%.
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Core Selection Example Analysis
Choose core with following requirements: minimum inductance with bias current amperes product 3.02 9.00 This coordinate passes through section permeability line and, proceeding upwards, intersects horizontal 55586 core line. part number core this size 55586-A2. 55586 core data sheet shows nominal inductance this core 1000 turns, ±8%. Therefore, minimum inductance this core 34.96 1000 turns. number turns needed obtain 169.1 turns. magnetizing force bias) 71.2 oersteds, yielding initial permeability. adjusted turns 249. wire table indicates that wire needed amperes. Therefore, 55586-A2 core with turns wire will meet requirements. analysis preceding result yields following: Calculate bias level oersteds: 0.4NI/le 104.9 oersteds permeability versus Bias curve shows initial permeability 104.9 oersteds material. Multiply minimum 34.96 0.48 yields 16.78 mH.4. inductance this core with turns with 104.9 oersteds bias will 1.04 minimum inductance requirement been achieved with bias. turns wire (0.00634 cm2) equals 1.579 cm2, which winding factor this core (total window area 4.01 cm2).
Core Selection
Temperature Rise Calculations
Temperature rise wound core depends wire resistance current through coil (Pcu, copper losses), core excitation (Pfe, core losses). Total power loss, defined (milliwatts), form heat dissipated from exposed surfaces wound core. heat dissipated depends total exposed surface wound unit. Temperature rise cannot predicted precisely, approximated following formula:
Total Power Loss (milliwatts) Temperature Rise (°C) Surface Area (cm2)
this catalog, surface area presented ways: Unwound core (after insulation added) Wound core, assuming winding factor
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.833
Hardware
Core Selector Chart
Cores Listed Geometry Factor
55868 55440 55091 55083 55071 55586 55310 55378
55908 55191 55111 55716 55076 55894 55350 55204 55118
125µ 160µ 200µ 300µ
55045 55035 55275 55265 55235 55175 55135
55125 55285 55405 55025 55015 55145
0.0001
0.001
0.01
1000
mH-amperes
High Flux Core Selector Chart
58908
Cores Listed Geometry Factor
58192 58110 58716
58868 58439 58090 58083 58548
58324 58930 58350
125µ 147µ
58585 58310 58379
58205 58119
160µ
58048
58128 58288 58408 58028 58018
58038 58278 58268 58238
0.001
0.01
mH-amperes
1000
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Kool Core Selector Chart
Cores Listed Geometry Factor
77868 77439 77090 77083 77071 77590 77314 77380 77908
77191 77110 77716 77076 77935 77354 77206 77120
Core Selection
125µ
77050 77040 77280 77270 77240 77180
77130 77290 77410 77030 77020 77150
77140
0.0001
0.001
0.01
mH-amperes
Kool Core Selector Chart
K5530 K5528 K4022 K4020 K4317 K3515
Cores Listed Geometry Factor
K2510
Hardware
K1808
mH-amperes
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Material Properties
PERMEABILITY TYPICAL Permeability dynamic range (-50° +100°C) Painted cores usuable 200°C dynamic range 4000gauss (peak 1000 gauss) flat
125µ 147µ
0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 0.6% 7.0% 0.8% 1.0% 1.4% 1.8% 2.5% 2.8% 4.0% 8.0% 10.0% 12.0% 15.0%
+0.4% +0.4% +0.8% +1.4% +1.9% +1.9% +1.9% +2.5% +4.0% +20.0% +5.0% +9.0% +13.5% +19.0% +22.5% +25.5% +1.0% +1.5% +2.0% +3.0% +3.5%
Cores
160µ 173µ 200µ 300µ 550µ
High Flux Cores
125µ 147µ 160µ
Kool Cores
125µ
Material porperties above only apply toroids, THINZ cores.
Curie Temperature Density Coefficient Thermal Expansion Thermal Conductivity
Temperature
Cores High Flux Cores Kool Cores
460°C 500°C 500°C
grams/cm3 grams/cm3 grams/cm3
12.9 10-6/°C 10-6/°C 10.8 10-6/°C
Watts/(cm Watts/(cm Watts/(cm
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Conversion Tables
Multiply Multiply number obtain number
MPP, High Flux, Kool MPP, High Flux, Kool MPP, High Flux, Kool MPP, High Flux, Kool High Flux Kool
oersteds gauss circular mils watts watts watts
.795 .0001 6.425 5.07 10-6 19.17 18.07 15.42
amp-turns tesla mWatts mWatts mWatts
Core weights listed this catalog 125µ cores. determine weights other permeabilities, multiply 125µ weight following factors: 147µ 160µ 173µ 1.02 200µ 300µ
Permeability
125µ
550µ
Technical Data
Factor
0.80
0.86
0.94
0.96
0.97
1.00
1.03
1.04
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Normal Magnetization Curves,
Flux Density (Kilogauss)
1000
Magnetizing Force (Oersteds)
Normal Magnetization Curves, High Flux
Flux Density (Kilogauss)
1000
Magnetizing Force (Oersteds)
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Normal Magnetization Curves, Kool Mµ11 1000
Flux Density (kilogauss)
Technical Data
Magnetizing Force (oersteds)
Normal Magnetization Curve Formula
(refer curves units)
where:
1.654E1 2.780E-2 5.900E-2 -4.990E-2 -5.810E-2 -4.440E-2 -6.140E-2 -1.154E-1 -1.228E-1 -1.201E-1 2.190E-2 4.120E-2 3.058E-1 -5.420E-2 -7.760E-2 -4.230E-2 7.450E-3 1.831E-3 7.738E-3 -9.675E-3 4.049E-2
9.249E-1 -2.274E-5 1.208E-4 2.060E-2 2.860E-2 3.300E-2 4.120E-2 5.780E-2 1.260E-1 4.105E-1 7.255E-4 7.493E-4 2.430E-2 2.220E-2 2.700E-2 2.980E-2 5.706E-4 4.621E-3 8.376E-3 1.250E-2 1.643E-2
6.189E1 8.849E-3 1.970E-2 7.879E-3 1.260E-2 7.975E-3 5.471E-3 4.820E-3 1.910E-2 5.070E-2 4.210E-2 4.230E-2 5.521E-4 8.372E-3 1.565E-3 1.763E-3 -2.930E-4 4.700E-3 5.773E-3 5.792E-3 3.121E-3
3.158E-1 -7.810E-6 4.780E-5 3.398E-4 4.533E-4 5.170E-4 6.450E-4 9.043E-4 1.946E-3 6.290E-3 2.200E-4 2.161E-4 6.434E-3 1.073E-4 1.403E-4 1.556E-4 5.539E-6 3.833E-5 7.159E-5 1.075E-4 1.447E-4
125µ 147µ 160µ 173µ 200µ 300µ 550µ 125µ 147µ 160µ 125µ
-23.740 0.2112 0.2576 0.0642 0.0653 0.0447 0.0545 0.1001 0.0940 0.0730 -1.880E-1 -1.286E-1 -5.360E-1 5.320E-2 7.740E-2 2.670E-2 5.868E-3 1.658E-2 1.433E-2 5.660E-2 7.808E-3
High Flux Kool
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Core Loss Density Curves,
10000 1000 0.01 0.01
Typical Core Loss (mw/cm)
PL=2.341B
2.21 1.31
Flux Density (kilogauss)
Core Loss Density Curves, High Flux
1000
Typical Core Loss (mw/cm)
PL=6.370
Flux Density (kilogauss)
2.52 1.26
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Core Loss Density Curves,
10000
Typical Core Loss (mw/cm3)
1000 0.01 0.01
PL=0.999B2.18F1.41
Technical Data
Flux Density (kilogauss)
Core Loss Density Curves, High Flux
1000
Typical Core Loss (mw/cm3)
PL=5.437
Flux Density (kilogauss)
2.55 1.25
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Core Loss Density Curves,
10000 1000 0.01 0.01
Typical Core Loss (mw/cm)
PL=0.625B
2.24 1.41
Flux Density (kilogauss)
Core Loss Density Curves, High Flux
Typical Core Loss (mw/cm3)
1000
PL=4.578
Flux Density (kilogauss)
2.56 1.23
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Core Loss Density Curves, 125µ
10000 1000 0.01 0.001
Typical Core Loss (mw/cm)
PL=1.199B2.31F1.40
Technical Data
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 125µ
Typical Core Loss (mw/cm)
1000
PL=2.687
Flux Density (kilogauss)
2.59 1.33
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Core Loss Density Curves, 147µ /160µ/173µ
10000 1000 0.01 0.001
Typical Core Loss (mw/cm)
PL=0.771B2.25F1.50
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 147µ/160µ
1000
Typical Core Loss (mw/cm)
PL=3.613
Flux Density (kilogauss)
2.56 1.41
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Core Loss Density Curves, 200µ/ 300µ
10000 1000 0.01 0.001
Typical Core Loss
PL=1.000B
2.27 1.64
Technical Data
Flux Density (kilogauss)
Core Loss Density Curves, 550µ
10000 1000
Typical Core Loss
0.01 0.001
PL=3.070B2.36F1.59
Flux Density (kilogauss)
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3-10
Core Loss Density Curves, Kool Mµ10000
Typical Loss Density (mw/cm3)
1000
PL=B2.00F1.46
Flux Density (kilogauss)
Unlike High Flux, typical loss density Kool does vary significantly with permeability; therefore, only material curve shown.
3-11
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Permeability versus Temperature Curves, (A2,
Unit Initial Permeability (typical)
1.04
1.03
1.02
1.01
300µ
173µ 125µ
1.00
0.99
Technical Data
Temperature,
coating maximum steady-state operating temperature 130°
Permeability versus Temperature Curves, (A2,
Unit Initial Permeability (typical)
1.15
1.10
1.05
1.00
0.95
Temperature,
coating maximum steady-state operating temperature 130°
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3-12
Permeability versus Temperature Curves, High Flux
Unit Initial Permeability (typical)
1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96
125µ
Temperature,
Permeability versus Temperature Curve Formula
(refer curves units)
where:
14µ: 0.9975 0.9967 0.9956 0.9940 0.9921 0.9908
9.667E-5 1.293E-4 1.739E-4 2.402E-4 3.140E-4 3.674E-4
5.556E-8 3.802E-8 4.094E-8 3.216E-8 7.310E-8 1.754E-8
High Flux
26µ: 60µ: 125µ: 147µ: 160µ:
3-13
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Permeability versus Temperature Curves, Kool
Unit Initial Permeability (typical)
1.02 1.00 0.98 0.96 0.94 0.92 0.90 0.88 0.86 0.84
Technical Data
Temperature,
Permeability versus Temperature Curve Formula
(refer curves units)
3.398E-2 7.691E-2 8.729E-2 1.033E-1 1.408E-1
-2.976E-4 -6.177E-4 -8.392E-4 -1.063E-3 -1.455E-3
-1.803E-6 -4.263E-6 -4.235E-6 -4.720E-6 -8.167E-6
1.079E-8 3.108E-8 3.749E-8 4.539E-8 7.764E-8
Kool
where:
26µ: 60µ: 75µ: 90µ: 125µ:
-0.3676 -1.450 -1.578 -1.854 -2.710
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3-14
Permeability versus Bias Curves,
Unit Initial Permeability
147µ 160µ 173µ
Magnetizing Force (Oersteds)
This curve only applies toroids. THINZDC Bias curve found page (4-35).
Permeability versus Bias Curves, High Flux
1000
Unit Initial Permeability
1000
Magnetizing Force (Oersteds)
3-15
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Permeability versus Bias Curves, Kool Mµ1.0
Unit Initial Permeability
1000
Technical Data
Magnetizing Force (oersteds)
This curve only applies Kool toroids. Kool core Bias curve found page (4-33).
Permeability versus Bias Curve Formula
(refer curves units)
High Flux
Kool
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3-16
Permeability versus Flux Curves,
Unit Initial Permeability
1.22 1.20 1.18 1.16 1.14 1.12 1.10 1.08 1.06 1.04 1.02 1.00 0.98
300µ 200µ
550µ
1000
Flux Density (gauss)
Permeability versus Flux Curves, High Flux
1.26 1.24 1.22 1.20 1.18 1.16 1.14 1.12 1.10 1.08 1.06 1.04 1.02 1.00 0.98
Unit Initial Permeability
1000
10000
Flux Density (gauss)
3-17
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Permeability versus Flux Curves, Kool MµPer Unit Initial Permeability
1.04
1.03
1.02
1.01
1.00
0.99 1000
Technical Data
Flux Density (gauss)
Permeability versus Flux Curve Formula
(refer curves units)
µeff
where:
14µ: 26µ: 60µ: 125µ: 147µ: 160µ: 173µ: 200µ: 300µ: 550µ: 14µ: 26µ: 60µ: 125µ: 147µ: 160µ: 26µ: 60µ: 75µ: 90µ: 125µ: 0.9995 0.9995 0.9990 0.9990 0.9980 0.9980 0.9980 0.9990 0.9980 0.9910 0.999 0.998 1.000 1.000 1.000 0.998 -1.291E-3 -1.850E-3 -2.135E-3 -2.769E-3 -2.421E-3
1.186E-5 1.186E-5 1.708E-5 2.960e-5 4.393E-5 4.393E-5 4.393E-5 5.145E-5 9.038E-5 4.042E-4 5.458E-5 1.020E-4 1.476E-4 1.934E-4 2.350E-4 2.910E-4 4.711E-5 7.340E-5 9.533E-5 1.430E-4 1.740E-4
-5.096E-9 -5.096E-9 -6.675E-9 -1.561E-8 -2.591E-8 -2.591E-8 -2.591E-8 -2.688E-8 -5.112E-8 -2.240E-7 -1.930E-8 -3.696E-8 -5.695E-8 -6.792E-8 -8.895E-8 -1.224E-7 -5.779E-8 -9.824E-8 -1.189E-7 -2.092E-7 -2.662E-7
-2.727E-12 -2.727E-12 -1.792E-12 8.254E-13 3.446E-12 3.446E-12 3.446E-12 3.308E-12 7.055E-12 3.123E-11 2.598E-12 5.099E-12 9.395E-12 1.014E-11 1.465E-11 2.263E-11 2.102E-11 4.486E-11 4.847E-11 1.115E-10 1.531E-10
High Flux Kool
µeff eB4)
where:
High Flux Kool
-1.228E-16 -2.529E-16 -6.182E-16 -6.347E-16 -9.716E-16 -1.590E-15 -2.121E-15 -7.157E-15 -6.242E-15 -2.135E-14 -3.170E-14
3-18
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Permeability versus Frequency Curves,
Unit Initial Permeability
0.01
Frequency (MHz)
Permeability versus Frequency Curves, High Flux
Unit Initial Permeability
0.01
Frequency (MHz)
3-19
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Permeability versus Frequency Curves, Kool MµPer Unit Initial Permeability
1.00
0.95
0.90
0.85
0.80
0.75 0.01
Technical Data
Frequency (MHz)
Permeability versus Frequency Curve Formula
(refer curves units)
1.793E2 1.823E2 1.805E2 1.818E2 1.816E2 1.816E2 1.816E2 1.809E2 1.786E2 1.773E2 180.3 183.0 182.6 181.6 180.951 180.951 180.6 180.4 177.4 181.2 179.2
-9.742E-3 -7.285E-3 -1.010E-2 -6.429E-3 7.382E-5 7.382E-5 7.382E-5 -4.943E-3 4.958E-3 2.649E-3 -0.008689 -0.003220 -4.248E-4 -0.001246 -0.001167 -0.001167 0.01116 0.01099 0.01724 0.008411 0.01379
1.790E2 1.817E2 1.799E2 1.812E2 1.805E2 1.805E2 1.805E2 1.810E2 1.794E2 1.792E2 180.0 182.4 181.7 179.5 179.4 179.4 180.5 180.6 177.9 181.9 180.4
-9.218E-3 -5.719E-3 -6.944E-3 2.624E-3 1.510E-2 1.510E-2 1.510E-2 1.400E-2 6.160E-2 9.260E-2 -0.008005 3.455E-4 0.009010 0.01970 0.03110 0.03110 0.01159 0.01183 0.01890 0.01048 0.01677
µeff where:
14µ: 26µ: 60µ: 125µ: 147µ: 160µ: 173µ: 200µ: 300µ: 550µ: 14µ: 26µ: 60µ: 125µ: 147µ: 160µ: 26µ: 60µ: 75µ: 90µ: 125µ:
-3.288 -7.930 -6.583 -3.676 -10.544 -10.544 -10.544 5.551 19.705 31.318 -3.514 -5.340 -9.438 -22.76 -12.87 -12.87 0.03919 4.182 7.559 12.80 19.18
High Flux Kool
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3-20
Wire Table
Wire Size
Resistance Wire /meter (cm) (x.305=/ft) Heavy Build
.00207 .00259 .00328 .00413 .00522 .00656 .00827 .01043 .01319 .01657 .0210 .0264 .0332 .0420 .0531 .0666 .0843 .1063 .1345 .1686 .214 .266 .341 .430 .531 .676 .856 1.086 1.362 1.680 2.13 2.78 3.51 4.33 5.45 7.02 8.50 10.99 13.81 17.36 22.1 27.6 .334 .298 .267 .238 .213 .1902 .1714 .1529 .1369 .1224 .1095 .0980 .0879 .0785 .0701 .0632 .0566 .0505 .0452 .0409 .0366 .0330 .0295 .0267 .0241 .0216 .01905 .01702 .01524 .01397 .01245 .01092 .00965 .00864 .00762 .00686 .00635 .00546 .00498 .00452 .00394 .00353
Wire Area Circ. Mils (x0.001)
18,000 14,350 11,500 9,160 7,310 5,850 4,680 3,760 3,000 2,420 1,940 1,560 1,250 1,000 96.0 77.4 60.8 49.0 39.7 32.5 26.0 20.2 16.0 13.0 10.2 8.40 7.30 5.30 4.40 3.60 2.90 2.25 91.2 72.7 58.2 46.4 37.0 29.6 23.7 19.1 15.2 12.2 9.83 7.91 6.34 5.07 4.11 3.29 2.66 2.15 1.72 1.37 1.11 .912 .730 .593 .487 .392 .308 .248 .201 .165 .132 .102 .081 .066 .052 .043 .037 .027 .022 .018 .015 .011
Current Capacity, Amps (listed columns amps/sq.cm.)
16.5 13.1 10.4 8.23 6.53 5.18 4.11 3.26 2.58 2.05 1.62 1.29 1.02 .812 .640 .511 .404 .320 .253 .202 .159 .128 .100 .0792 .0640 .0504 .0397 .0314 .0250 .0203 .0160 .0123 .00961 .00785 .00625 .00484 .00400 .00309 .00248 .00194 .00175 .00150 33.0 26.2 20.8 16.4 13.1 10.4 8.22 6.52 5.16 4.10 3.25 2.58 2.05 1.63 1.28 1.02 .808 .641 .506 .403 .255 .200 .158 .128 .101 .0794 .0627 .0500 .0405 .0320 .0245 .0192 .0157 .0125 .00968 .00800 .00618 .00496 .00388 .00350 .00300 49.5 39.3 31.2 24.6 19.6 15.5 12.3 9.78 7.74 6.15 4.88 3.87 3.08 2.44 1.92 1.53 1.21 .962 .759 .604 .477 .382 .300 .237 .192 .152 .119 .0940 .0750 .0608 .0480 .0368 .0288 .0236 .0188 .0145 .0120 .00927 .00744 .00582 .00525 .00450 66.0 52.4 41.6 32.8 26.1 20.8 16.4 13.0 10.3 8.20 6.50 5.16 4.10 3.25 2.56 2.04 1.62 1.28 1.01 .806 .636 .510 .400 .316 .256 .202 .159 .125 .100 .0810 .0640 .0490 .0384 .0314 .0250 .0194 .0160 .0124 .00992 .00776 .00700 .00600
3-21
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0.140" 0.070"
3.56mm 1.78mm 1.52mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 4.19 1.27 2.16 0.165 0.050 0.085
0.060"
Permeability
Kool
Part Number
High Flux Kool
55140-AY 55139-AY 55138-AY 55134-AY 55137-AY 55135-AY
Wire Size Turns (u.w.f.)
(Ohms, (u.w.f.) Single Layer Turns
77141-AY 77445-AY 77444-AY 77140-AY Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.018 0.0137 0.817 0.0112 0.094 0.069 0.0002 3,600 c.mils 0.0021 0.317 0.00067 0.00019 0.00014 0.000006
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 0.698 0.0229 0.658 0.0216 0.619 0.0203 0.600 0.0197 0.594 0.0195
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 4.95 2.74 0.195 0.108
1241
0.0373 0.0595 0.093 0.137 0.217 0.353 0.553 0.865 2.05 3.45 5.51 8.37 13.4 29.2 52.1 78.9 114.7 191.8
0.0174 0.0263 0.0357 0.0506 0.0723 0.107 0.155 0.227 0.31 0.442 0.661 0.96 1.34 1.91 2.76 3.64 4.78 7.55 10.5 15.4
Surface Area
Unwound Core Winding Factor 0.482 0.65 0.075 0.101
www.mag-inc.com
0.155" 0.088"
3.94mm 2.24mm 2.54mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 4.57 1.73 3.18 0.180 0.068 0.125
0.100"
Permeability
Kool
Part Number
High Flux Kool
55150-AY 55149-AY 55148-AY 55144-AY 55147-AY 55145-AY
Wire Size Turns (u.w.f.)
(Ohms, (u.w.f.) Single Layer Turns
77151-AY 77155-AY 77154-AY 77150-AY Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.0308 0.0211 0.942 0.0199 0.172 0.122 0.0006 6,080 c.mils 0.00327 0.371 0.00121 0.00038 0.00027 0.000015
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.049 0.0344 0.989 0.0324 0.929 0.0305 0.903 0.0296 0.894 0.0293
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 5.77 4.75 0.227 0.187
1005 1221 1480
0.0544 0.0837 0.1324 0.205 0.309 0.488 0.787 1.229 1.916 2.89 4.57 7.69 12.31 18.61 29.8 46.7 115.9 175.4
0.0249 0.0357 0.0518 0.0768 0.104 0.151 0.222 0.32 0.45 0.615 0.873 1.32 1.91 2.63 3.79 5.46 7.13 10.8 14.9 20.8
Core Data
Surface Area
Unwound Core Winding Factor 0.76 0.118 0.186
www.mag-inc.com
0.183" 0.093"
4.65mm 2.36mm 2.54mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 5.28 1.85 3.18 0.208 0.073 0.125
0.100"
Permeability
Kool
Part Number
High Flux Kool
55181-AY 55180-AY 55179-AY 55178-AY 55174-AY 55177-AY 55175-AY
Wire Size Turns (u.w.f.)
(Ohms, (u.w.f.) Single Layer Turns
77181-AY 77185-AY 77184-AY 77180-AY Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.029 0.0285 1.062 0.0303 0.25 0.18 0.0008 5,780 c.mils 0.00442 0.418 0.00185 0.00056 0.00041 0.000020
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.143 0.0375 1.083 0.0355 1.024 0.0336 0.998 0.0327 0.988 0.0324
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 6.65 4.94 0.262 0.195
1090 1313
0.0412 0.0643 0.0989 0.156 0.243 0.366 0.577 0.93 1.46 2.26 3.41 9.08 14.5 35.3 55.2 76.8
0.0183 0.0275 0.0395 0.0572 0.0807 0.115 0.16 0.237 0.343 0.484 0.664 0.944 1.43 2.05 2.86 4.08 7.72 11.6 16.1
Surface Area
Unwound Core Winding Factor 1.108 1.50 0.172 0.233
www.mag-inc.com
0.250" 0.110"
6.35mm 2.79mm 2.79mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 6.99 2.29 3.43 0.275 0.090 0.135
0.110"
020A2
Part Number
High Flux Kool
Permeability
Kool
55023-A2 55022-A2 55021-A2 55020-A2 55019-A2 55018-A2 55014-A2 55017-A2 55015-A2 55016-A2
Wire Size Turns (u.w.f.)
58023-A2 58022-A2 58021-A2 58020-A2 58019-A2 58018-A2 (Ohms, (u.w.f.) Single Layer Turns
77021-A7 77825-A7 77824-A7 77020-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.0412 0.0470 1.361 0.0640 0.588 0.553 0.393 0.0019 8,100 c.mils 0.00729 0.536 0.00391 0.0013 0.0012 0.0009 0.000046
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.348 0.0442 1.273 0.0417 1.200 0.0394 1.168 0.0383 1.156 0.0379
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 8.81 5.38 0.347 0.212
1110 1528
0.0432 0.0682 0.1063 0.1635 0.259 0.401 0.604 0.953 1.54 2.42 3.74 5.64 8.92 15.01 36.4 58.3 91.2
0.0186 0.0273 0.0395 0.0554 0.0828 0.114 0.16 0.235 0.336 0.477 0.691 0.931 1.33 1.99 2.87 5.72 8.19 10.8 16.2
Core Data
Surface Area
Unwound Core Winding Factor 1.68 0.260 0.341
www.mag-inc.com
0.260" 0.105""
6.60mm 2.67mm 2.54mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 7.24 2.16 3.18 0.285 0.085 0.125
0.100"
240A2
Part Number
High Flux Kool
Permeability
Kool
55243-A2 55242-A2 55241-A2 55240-A2 55239-A2 55238-A2 55234-A2 55237-A2 55235-A2 55236-A2
Wire Size Turns (u.w.f.)
58243-A2 58242-A2 58241-A2 58240-A2 58239-A2 58238-A2 (Ohms, (u.w.f.) Single Layer Turns
77241-A7 77245-A7 77244-A7 77240-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.0412 0.0476 1.363 0.0649 0.58 0.55 0.399 0.0020 8,100 c.mils 0.00738 0.537 0.00396 0.0013 0.0012 0.00088 0.000047
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.327 0.0435 1.251 0.0410 1.176 0.0386 1.144 0.0375 1.132 0.0371
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 9.12 5.13 0.359 0.202
1110 1528
0.0425 0.0671 0.1046 0.1609 0.255 0.395 0.595 0.938 1.513 2.38 3.68 5.55 8.78 14.8 23.7 35.8 57.3 89.8
0.0183 0.0267 0.0388 0.0542 0.81 0.112 0.156 0.229 0.329 0.479 0.677 0.912 1.95 2.82 3.92 8.02 10.6 15.9
Surface Area
Unwound Core Winding Factor 0.264 0.357 1.70
www.mag-inc.com
0.260" 0.105"
6.60mm 2.67mm 4.78mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 7.24 2.16 5.54 0.285 0.085 0.213
0.188"
270A2
Part Number
High Flux Kool
Permeability
Kool
55273-A2 55272-A2 55271-A2 55270-A2 55269-A2 55268-A2 55264-A2 55267-A2 55265-A2 55266-A2
Wire Size Turns (u.w.f.)
58273-A2 58272-A2 58271-A2 58270-A2 58269-A2 58268-A2 (Ohms, (u.w.f.) Single Layer Turns
77271-A7 77875-A7 77874-A7 77270-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.0384 0.0920 1.363 0.1254 1.09 1.03 0.771 0.0035 7,570 c.mils 0.01426 0.537 0.00765 0.0024 0.0023 0.0017 0.000085
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.754 0.0575 1.701 0.0558 1.650 0.0541 1.628 0.0534 1.620 0.0531
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 9.17 7.42 0.361 0.292
1037 1428
0.0525 0.0828 0.1292 0.1988 0.314 0.487 0.734 1.158 1.868 2.94 4.55 6.86 10.85 18.25 29.2 44.2 70.8 110.9 154.4
0.0262 0.0355 0.0555 0.0733 0.11 0.153 0.215 0.307 0.457 0.651 0.925 1.25 1.78 2.69 3.86 7.67 11.1 14.6 21.9
Core Data
Surface Area
Unwound Core Winding Factor 2.41 0.375 0.450
www.mag-inc.com
0.270" 0.156"
6.86mm 3.96mm 5.08mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 7.49 3.45 5.71 0.295 0.136 0.225
0.200"
410A2
Part Number
High Flux Kool
Permeability
Kool
55413-A2 55412-A2 55411-A2 55410-A2 55409-A2 55408-A2 55404-A2 55407-A2 55405-A2
Wire Size Turns (u.w.f.)
58413-A2 58412-A2 58411-A2 58410-A2 58409-A2 58408-A2 (Ohms, (u.w.f.) Single Layer Turns
77411-A7 77415-A7 77414-A7 77410-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.0934 0.0725 1.65 0.1196 0.94 0.736 0.0067 18,500 c.mils 0.01124 0.650 0.00731in3 0.0022 0.0021 0.0016 0.000161
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.786 0.0586 1.698 0.0557 1.612 0.0529 1.579 0.0518 1.561 0.0512
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 9.60 10.0 0.378 0.394
1157 1424 1814 2203 2535 3491
0.1321 0.208 0.325 0.49 0.786 1.221 1.832 2.89 4.66 7.33 11.33 17.1 45.5 72.5 110.1 176.5
0.042 0.0605 0.0869 0.121 0.176 0.248 0.34 0.485 0.708 1.02 1.42 1.91 2.75 4.12 5.92 8.18 11.7 16.8 33.4
Surface Area
Unwound Core Winding Factor 0.419 0.496
www.mag-inc.com
0.310" 0.156"
7.87mm 3.96mm 3.18mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 8.51 3.45 3.81 0.335 0.136 0.150
0.125"
5030A2
Part Number
High Flux Kool
Permeability
Kool
55033-A2 55032-A2 55031-A2 55030-A2 55029-A2 55028-A2 55024-A2 55027-A2 55025-A2 55026-A2
Wire Size Turns (u.w.f.)
58033-A2 58032-A2 58031-A2 58030-A2 58029-A2 58028-A2 (Ohms, (u.w.f.) Single Layer Turns
77031-A7 77835-A7 77834-A7 77030-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.0922 0.0615 1.787 0.1099 0.92 0.87 0.676 0.0057 18,200 c.mils 0.00953 0.704 0.00671 0.0020 0.0019 0.0015 0.000136
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.598 0.0524 1.471 0.0482 1.347 0.0442 1.292 0.0424 1.272 0.0417
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 11.0 6.73 0.433 0.265
1139 1402
0.0191 0.0298 0.0467 0.0728 0.1152 0.1818 0.284 0.436 0.69 1.069 1.612 2.54 6.45 9.98 15.04 23.8 64.1
0.0082 0.0109 0.016 0.0243 0.0342 0.0493 0.0707 0.0982 0.143 0.202 0.277 0.395 0.577 0.828 1.16 1.56 2.24 3.79 4.82 6.65
Core Data
Surface Area
Unwound Core Winding Factor 2.38 0.369 0.496
www.mag-inc.com
0.380" 0.188"
9.65mm 4.78mm 3.18mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 10.29 4.27 3.81 0.405 0.168 0.150
0.125"
55280A2
Part Number
High Flux Kool
Permeability
Kool
55283-A2 55282-A2 55281-A2 55280-A2 55279-A2 55278-A2 55274-A2 55277-A2 55275-A2 55276-A2
Wire Size Turns (u.w.f.)
58283-A2 58282-A2 58281-A2 58280-A2 58279-A2 58278-A2 (Ohms, (u.w.f.) Single Layer Turns
77281-A7 77885-A7 77884-A7 77280-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.1429 0.0752 2.18 0.1639 1.008 0.0107 28,200 c.mils 0.01166 0.858 0.0100 0.0030 0.0028 0.00222 0.000258
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.793 0.0588 1.627 0.0533 1.465 0.0480 1.393 0.0457 1.366 0.0448
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 13.4 7.44 0.526 0.293
1086 1397
0.01345 0.0212 0.0332 0.0518 0.0812 0.1265 0.316 0.493 0.758 1.199 1.858 4.42 7.12 11.21 17.3 26.1 41.4 69.6
0.0054 0.0074 0.0108 0.0164 0.0231 0.0334 0.0478 0.0668 0.0966 0.135 0.195 0.276 0.377 0.535 0.783 1.11 1.57 2.11 3.02 4.52
Surface Area
Unwound Core Winding Factor 3.12 0.483 0.682
www.mag-inc.com
0.380" 0.188"
9.65mm 4.78mm 3.96mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 10.29 4.27 4.60 0.405 0.168 0.181
0.156"
5290A2
Part Number
High Flux Kool
Permeability
Kool
55293-A2 55292-A2 55291-A2 55290-A2 55289-A2 55288-A2 55284-A2 55287-A2 55285-A2 55286-A2
Wire Size Turns (u.w.f.)
58293-A2 58292-A2 58291-A2 58290-A2 58289-A2 58288-A2 (Ohms, (u.w.f.) Single Layer Turns
77291-A7 77295-A7 77294-A7 77290-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.1429 0.0945 2.18 0.206 1.44 0.0135 28,200 c.mils 0.01465 0.859 0.0126 0.0039 0.0037 0.0032 0.000325
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.928 0.0632 1.768 0.0580 1.613 0.0529 1.545 0.0506 1.519 0.0498
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 13.4 8.20 0.526 0.323
1086 1397
0.01446 0.0228 0.0357 0.0557 0.0873 0.136 0.215 0.34 0.529 0.815 1.288 1.997 3.01 4.75 7.66 12.05 18.65 28.1 44.5 74.8
0.00605 0.00826 0.012 0.0182 0.0256 0.0371 0.0531 0.0743 0.107 0.15 0.217 0.307 0.42 0.594 0.871 1.24 1.74 2.34 3.35 5.02
Core Data
Surface Area
Unwound Core Winding Factor 3.46 0.537 0.729
www.mag-inc.com
4-10
0.400" 0.200"
10.2mm 5.08mm 3.96mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 10.80 4.57 4.60 0.425 0.180 0.181
0.156"
5040A2
Part Number
High Flux Kool
Permeability
Kool
55043-A2 55042-A2 55041-A2 55040-A2 55039-A2 55038-A2 55034-A2 55037-A2 55035-A2 55036-A2
Wire Size Turns (u.w.f.)
58043-A2 58042-A2 58041-A2 58040-A2 58039-A2 58038-A2 (Ohms, (u.w.f.) Single Layer Turns
77041-A7 77845-A7 77844-A7 77040-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.164 0.1000 2.38 0.238 1.91 1.80 1.46 0.0164 32,400 c.mils 0.01550 0.906 0.014 0.0041 0.0039 0.0032 0.000395
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 1.986 0.0651 1.811 0.0594 1.640 0.0538 1.566 0.0513 1.537 0.0504
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 14.1 8.46 0.554 0.333
1000 1246 1604
0.01709 0.0267 0.0422 0.0659 0.1032 0.1608 0.254 0.402 0.626 0.963 1.523 2.36 3.56 5.61 9.05 14.25 33.3 52.6 88.4
0.00663 0.00968 0.0139 0.0195 0.0285 0.0408 0.0579 0.0804 0.119 0.164 0.236 0.33 0.457 0.654 0.947 1.35 2.56 3.66 5.46
Surface Area
Unwound Core Winding Factor 4-11 3.703 0.574 0.791
www.mag-inc.com
0.440" 0.250"
11.2mm 6.35mm 3.96mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 11.81 5.84 4.60 0.465 0.230 0.181
0.156"
5130A2 55130-A2
Part Number
High Flux Kool
Permeability
Kool
55133-A2 55132-A2 55131-A2 55130-A2 55129-A2 55128-A2 55124-A2 55127-A2 55125-A2
Wire Size Turns (u.w.f.)
58133-A2 58132-A2 58131-A2 58130-A2 58129-A2 58128-A2 (Ohms, (u.w.f.) Single Layer Turns
77131-A7 77335-A7 77334-A7 77130-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.273 0.0906 2.69 0.2437 2.12 1.99 1.499 0.0247 53,800 c.mils 0.0140 1.08 0.01487 0.0046 0.0043 0.0033 0.000592
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 2.195 0.0720 1.942 0.0637 1.695 0.0556 1.585 0.0520 1.545 0.0507
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 15.7 0.618 0.353
1098
0.00533 0.00808 0.01276 0.02 0.03192 0.04958 0.07747 0.121 0.1896 0.295 0.467 0.737 1.15 1.747 4.34 6.54 10.31 16.63 26.2
0.00203 0.00282 0.00422 0.00612 0.00873 0.013 0.0188 0.0268 0.0378 0.0543 0.077 0.109 0.155 0.214 0.311 0.438 0.856 1.23 1.76
Core Data
Surface Area
Unwound Core Winding Factor 4.31 0.669 0.936 4-12
www.mag-inc.com
0.500" 0.300"
12.7mm 7.62mm 4.75mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 13.46 6.99 5.51 0.530 0.275 0.217
0.187"
5050A2
Part Number
High Flux Kool
Permeability
55053-A2 55052-A2 55051-A2 55050-A2 55049-A2 55048-A2 55044-A2 55047-A2 55045-A2 55046-A2
Wire Size Turns (u.w.f.)
58053-A2 58052-A2 58051-A2 58050-A2 58049-A2 58048-A2 (Ohms, (u.w.f.) Single Layer Turns
77051-A7 77055-A7 77054-A7 77050-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.383 0.1140 3.12 0.356 3.07 2.90 2.20 0.0437 75,600 c.mils 0.01767 1.229 0.0217 0.0064 0.0060 0.0049 0.001049
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 2.49 0.0815 2.20 0.0721 1.920 0.0629 1.797 0.0589 1.751 0.0574
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 18.2 11.5 0.717 0.451
1244 1543
0.00826 0.0129 0.0203 0.0318 0.05 0.0789 0.1233 0.1925 0.302 0.47 0.743 1.173 1.829 2.81 4.45 10.4 16.4 26.5 41.6
0.00276 0.00406 0.00587 0.00877 0.0122 0.0176 0.026 0.0362 0.0516 0.0744 0.106 0.148 0.21 0.293 0.434 0.594 0.809 1.16 1.68 2.37
Surface Area
Unwound Core Winding Factor 5.60 0.870 1.26
4-13
www.mag-inc.com
0.650" 0.400"
16.5mm 10.2mm 6.35mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 17.40 9.53 7.11 0.680 0.375 0.280
0.250"
5120A2
Part Number
High Flux Kool
Permeability
55123-A2 55122-A2 55121-A2 55120-A2 55119-A2 55118-A2 55114-A2 55117-A2 55115-A2 55116-A2
Wire Size Turns (u.w.f.)
58123-A2 58122-A2 58121-A2 58120-A2 58119-A2 58118-A2 (Ohms, (u.w.f.) Single Layer Turns
77121-A7 77225-A7 77224-A7 77120-A7 Single Layer Rdc. (Ohms, Single 0.00174 0.00254 0.00366 0.00522 0.00765 0.0111 0.0157 0.0219 0.0314 0.0455 0.0644 0.0906 0.131 0.189 0.26 0.368 0.51 0.735 1.02 1.41
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.713 0.1920 4.11 0.789 6.78 6.34 4.98 0.1369 140,600 c.mils 0.0298 1.619 0.048 0.015 0.014 0.011 0.0029
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 3.22 0.1057 2.82 0.0926 2.44 0.0798 2.26 0.0742 2.20 0.0721
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 23.7 15.2 0.932 0.599
1202 1465
0.00508 0.008 0.01257 0.01992 0.031 0.049 0.0767 0.1205 0.1903 0.297 0.464 0.728 1.133 1.792 2.83 4.41 6.79 10.74 16.64 25.1
Core Data
Surface Area
Unwound Core Winding Factor 13.6 1.43 2.11 4-14
www.mag-inc.com
0.680" 0.380"
17.3mm 9.65mm 6.35mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 18.03 9.02 7.11 0.710 0.355 0.280
0.250"
5380A2
Part Number
High Flux Kool
Permeability
55383-A2 55382-A2 55381-A2 55380-A2 55379-A2 55378-A2 55374-A2 55377-A2 55375-A2
Wire Size Turns (u.w.f.)
58383-A2 58382-A2 58381-A2 58380-A2 58379-A2 58378-A2 (Ohms, (u.w.f.) Single Layer Turns
77381-A7 77385-A7 77384-A7 77380-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 0.576 0.232 4.14 0.960 8.16 0.134 126,000 c.mils 0.0360 1.63 0.059 0.018 0.017 0.013 0.00321
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 3.67 0.1204 3.15 0.1032 2.64 0.0864 2.41 0.0791 2.33 0.0763
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 24.9 16.3 0.980 0.641
1076 1312
0.00506 0.00789 0.0126 0.0203 0.0316 0.0492 0.0775 0.122 0.194 0.302 0.472 0.743 1.15 1.83 2.88 4.49 6.84 10.96 16.97 25.6
0.00167 0.0025 0.00364 0.00521 0.00732 0.0107 0.0154 0.0224 0.0215 0.0313 0.0457 0.0635 0.0902 0.129 0.185 0.259 0.369 0.508 0.73 1.02
Surface Area
Unwound Core Winding Factor 4-15 14.7 1.53 2.28
www.mag-inc.com
0.800" 0.500"
20.3mm 12.7mm 6.35mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 21.1 12.07 7.11 0.830 0.475 0.280
0.250"
5206A2
Part Number
High Flux Kool
Permeability
55209-A2 55208-A2 55848-A2 55206-A2 55205-A2 55204-A2 55200-A2 55203-A2 55201-A2 55202-A2
Wire Size Turns (u.w.f.)
58209-A2 58208-A2 58848-A2 58206-A2 58205-A2 58204-A2 (Ohms, (u.w.f.) Single Layer Turns
77848-A7 77211-A7 77210-A7 77206-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 1.14 0.226 5.09 1.15 0.258 225,600 c.mils 0.0350 2.01 0.0703 0.023 0.022 0.016 0.00620
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 3.67 0.1204 3.15 0.1032 2.64 0.0864 2.41 0.0791 2.33 0.0763
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 29.2 17.4 1.148 0.648
1026 1253 1567
0.00374 0.00591 0.00929 0.01463 0.023 0.0364 0.0567 0.0895 0.1402 0.22 0.348 0.543 0.848 1.33 2.07 3.28 5.17 8.06 12.41 19.62
0.001354 0.0017 0.00245 0.00347 0.0051 0.00736 0.0104 0.0151 0.0215 0.0301 0.0439 0.0618 0.0867 0.124 0.176 0.25 0.349 0.498 0.688 0.992
Core Data
Surface Area
Unwound Core Winding Factor 12.1 18.9 1.88 2.93 4-16
www.mag-inc.com
0.900" 0.550"
22.9mm 14.0mm 7.62mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 23.6 13.34 8.38 0.930 0.525 0.330
0.300"
5310A2
Part Number
High Flux Kool
Permeability
55313-A2 55312-A2 55059-A2 55310-A2 55309-A2 55308-A2 55304-A2 55307-A2 55305-A2 55306-A2
Wire Size Turns (u.w.f.)
58313-A2 58312-A2 58059-A2 58310-A2 58309-A2 58308-A2 (Ohms, (u.w.f.) Single Layer Turns
77312-A7 77059-A7 77315-A7 77314-A7 77310-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 1.41 0.331 5.67 1.88 15.9 15.0 11.5 0.467 277,700 c.mils 0.0513 2.23 0.114 0.034 0.032 0.025 0.01119
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 4.29 0.1405 3.67 0.1203 3.07 0.1005 2.80 0.0919 2.70 0.0886
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 32.6 19.8 1.283 0.778
1029 1262 1543
0.00339 0.00537 0.00849 0.01334 0.0211 0.033 0.0523 0.0814 0.1285 0.201 0.316 0.499 0.78 1.219 1.91 2.97 4.71 7.43 11.58 17.82
0.00106 0.00156 0.00226 0.0032 0.0047 0.00676 0.00961 0.0138 0.0198 0.0278 0.0395 0.0565 0.0804 0.113 0.161 0.229 0.324 0.45 0.642 0.892
Surface Area
Unwound Core Winding Factor 15.7 23.8 2.43 3.69
4-17
www.mag-inc.com
0.928" 0.567"
23.6mm 14.4mm 8.89mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 24.3 13.77 9.65 0.958 0.542 0.380
0.350"
5350A2
Part Number
High Flux Kool
Permeability
55353-A2 55352-A2 55351-A2 55350-A2 55349-A2 55348-A2 55344-A2 55347-A2 55345-A2
Wire Size Turns (u.w.f.)
58353-A2 58352-A2 58351-A2 58350-A2 58349-A2 58348-A2 (Ohms, (u.w.f.) Single Layer Turns
77352-A7 77351-A7 77355-A7 77354-A7 77350-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 1.49 0.388 5.88 2.28 19.9 18.8 14.0 0.578 293,800 c.mils 0.061 2.32 0.142 0.042 0.040 0.031 0.0139
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 4.49 0.1473 3.91 0.1282 3.34 0.1095 3.09 0.1013 3.00 0.0982
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 33.5 21.4 1.319 0.843
1088 1335
0.00238 0.00376 0.00595 0.00941 0.0148 0.0233 0.0366 0.058 0.0903 0.1425 0.223 0.351 0.554 0.865 1.351 2.12 5.22 8.24 12.84
0.000853 0.00127 0.00186 0.00265 0.00373 0.00544 0.00781 0.0111 0.0159 0.0226 0.0316 0.0458 0.0691 0.0923 0.13 0.184 0.261 0.37 0.515 0.731
Core Data
Surface Area
Unwound Core Winding Factor 17.9 26.3 2.78 4.08 4-18
www.mag-inc.com
1.060" 0.580"
26.9mm 14.7mm 11.2mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 27.7 14.10 11.94 1.090 0.555 0.470
0.440"
5930A2
Part Number
High Flux Kool
Permeability
55933-A2 55932-A2 55894-A2 55930-A2 55929-A2 55928-A2 55924-A2 55927-A2 55925-A2 55926-A2
Wire Size Turns (u.w.f.)
58933-A2 58932-A2 58894-A2 58930-A2 58929-A2 58928-A2 (Ohms, (u.w.f.) Single Layer Turns
77932-A7 77894-A7 77935-A7 77934-A7 77930-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 1.56 0.654 6.35 4.15 35.8 33.8 25.5 1.020 308,000 c.mils 0.1014 2.50 0.254 0.080 0.075 0.056 0.0245
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 5.23 0.1714 4.66 0.1526 4.10 0.1344 3.85 0.1263 3.76 0.1233
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 37.3 24.0 1.468 0.944
1141 1400
0.00291 0.00459 0.00726 0.01148 0.01805 0.0284 0.0447 0.0707 0.1102 0.1739 0.272 0.428 0.676 1.056 1.649 2.58 4.02 6.37 10.05 15.67
0.00107 0.0016 0.00233 0.00333 0.00494 0.00685 0.0098 0.0144 0.0203 0.0291 0.0416 0.0587 0.0835 0.12 0.165 0.237 0.335 0.476 0.744 0.942
Surface Area
Uwound Core Winding Factor 24.7 33.8 3.83 5.24
4-19
www.mag-inc.com
1.300" 0.785"
33.0mm 19.9mm 10.7mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 33.8 19.30 11.43 1.330 0.760 0.450
0.420"
5548A2
Part Number
High Flux Kool
Permeability
55551-A2 55550-A2 55071-A2 55548-A2 55547-A2 55546-A2 55542-A2 55545-A2 55543-A2 55544-A2
Wire Size Turns (u.w.f.)
58551-A2 58550-A2 58071-A2 58548-A2 58547-A2 58546-A2 (Ohms, (u.w.f.) Single Layer Turns
77550-A7 77071-A7 77553-A7 77552-A7 77548-A7
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 2.93 0.672 8.15 5.48 46.9 44.2 33.7 1.969 577,600 c.mils 0.1042 3.21 0.334 0.106 0.100 0.074 0.0473
Single Layer Rdc. (Ohms,
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 5.93 0.1943 5.09 0.1668 4.27 0.1400 3.91 0.1282 3.78 0.1238
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 46.7 28.0 1.840 1.103
1100 1359 1699 2139
0.00393 0.00618 0.00976 0.01544 0.0244 0.0384 0.0604 0.0949 0.1504 0.234 0.37 0.579 0.909 1.437 2.24 5.49 8.56 13.53 21.4
0.00117 0.00166 0.00236 0.00343 0.0055 0.00693 0.00999 0.0142 0.0204 0.0288 0.0411 0.0578 0.0815 0.118 0.166 0.231 0.328 0.465 0.66 0.922
Core Data
Surface Area
Unwound Core Winding Factor 31.5 48.0 4.88 7.44 4-20
www.mag-inc.com
1.350" 0.920"
34.3mm 23.4mm 8.89mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 35.2 22.6 9.78 1.385 0.888 0.385
0.350"
5585A2
Part Number
High Flux Kool
Permeability
55588-A2 55587-A2 55586-A2 55585-A2 55584-A2 55583-A2 55579-A2 55582-A2 55580-A2 55581-A2
Wire Size Turns (u.w.f.)
58588-A2 58587-A2 58586-A2 58585-A2 58584-A2 58583-A2 (Ohms, (u.w.f.) Single Layer Turns
77587-A7 77586-A7 77590-A7 77589-A7 77585-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 4.01 0.454 8.95 4.06 34.9 32.9 25.0 1.821 788,500 c.mils 0.0704 3.53 0.249 0.081 0.076 0.055 0.0436
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 5.87 0.1923 4.84 0.1586 3.84 0.1258 3.39 0.1113 3.23 0.1059
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 50.1 29.0 1.974 1.142
1213 1502 1855 2319 2921
0.00531 0.00835 0.01319 0.0209 0.033 0.0518 0.0817 0.1283 0.203 0.316 0.499 0.782 1.229 1.941 3.03 4.74 7.43 11.56 18.29 28.9
0.0012 0.00168 0.00243 0.00348 0.00505 0.0072 0.0101 0.0145 0.0205 0.0288 0.0413 0.0665 0.0826 0.118 0.168 0.234 0.322 0.47 0.665 0.925
Surface Area
Unwound Core Winding Factor 29.3 51.3 4.537 7.95
4-21
www.mag-inc.com
1.410" 0.880"
35.8mm 22.4mm 10.5mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 36.7 21.5 11.35 1.445 0.848 0.447
0.412"
5324A2
Part Number
High Flux Kool
Permeability
55327-A2 55326-A2 55076-A2 55324-A2 55323-A2 55322-A2 55318-A2 55321-A2 55319-A2 55320-A2
Wire Size Turns (u.w.f.)
58327-A2 58326-A2 58076-A2 58324-A2 58323-A2 58322-A2 (Ohms, (u.w.f.) Single Layer Turns
77326-A7 77076-A7 77329-A7 77328-A7 77324-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 3.64 0.678 8.98 6.088 51.8 48.9 37.4 2.47 719,100 c.mils 0.1051 3.54 0.372 0.112 0.106 0.082 0.0594
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 6.22 0.2040 5.27 0.1727 4.34 0.1422 3.93 0.1288 3.78 0.1238
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 51.1 29.6 2.01 1.165
1106 1370 1692 2115 2663
0.00513 0.00807 0.01275 0.0202 0.0319 0.0501 0.079 0.124 0.1965 0.306 0.483 0.757 1.188 1.877 2.93 4.58 7.18 11.18 17.68 27.9
0.00133 0.00185 0.00273 0.0039 0.00551 0.00792 0.0112 0.0162 0.0229 0.0325 0.0458 0.0648 0.0915 0.13 0.187 0.259 0.368 0.521 0.741 1.02
Core Data
Surface Area
Unwound Core Winding Factor 34.5 55.1 5.35 8.54 4-22
www.mag-inc.com
1.570" 0.950"
39.9mm 24.1mm 14.5mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 40.8 23.3 15.37 1.605 0.918 0.605
0.570"
5254A2
Part Number
High Flux Kool
Permeability
55257-A2 55256-A2 55083-A2 55254-A2 55253-A2 55252-A2 55248-A2 55251-A2 55249-A2 55250-A2
Wire Size Turns (u.w.f.)
58257-A2 58256-A2 58083-A2 58254-A2 58253-A2 58252-A2 (Ohms, (u.w.f.) Single Layer Turns
77256-A7 77083-A7 77259-A7 77258-A7 77254-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 4.27 1.072 9.84 10.5 91.7 86.5 64.9 4.58 842,700 c.mils 0.1662 3.88 0.645 0.206 0.194 0.143 0.1100
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 7.38 0.242 6.38 0.209 5.40 0.1772 4.97 0.1631 4.81 0.1578
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 56.4 35.2 2.22 1.385
1040 1297 1605 1983 2479 3121
0.00714 0.01123 0.01774 0.0281 0.0444 0.0698 0.1099 0.1726 0.273 0.426 0.672 1.053 1.653 2.61 4.08 6.37 9.99 15.55 24.6 38.8
0.00179 0.00263 0.00378 0.00537 0.00778 0.0111 0.0155 0.0221 0.0317 0.0446 0.0636 0.0902 0.128 0.182 0.259 0.359 0.511 0.721 1.02 1.42
Surface Area
Unwound Core Winding Factor 4-23 48.4 71.7 11.1
www.mag-inc.com
1.840" 0.950"
46.7mm 24.1mm 18.0mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 47.6 23.3 18.92 1.875 0.918 0.745
0.710"
5438A2
Part Number
High Flux Kool
Permeability
55441-A2 55440-A2 55439-A2 55438-A2 55437-A2 55436-A2 55432-A2 55435-A2 55433-A2
Wire Size Turns (u.w.f.)
58441-A2 58440-A2 58439-A2 58438-A2 (Ohms, (u.w.f.) Single Layer Turns
77440-A7 77439-A7 77443-A7 77442-A7 77438-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 4.27 1.990 10.74 21.3 131.4 8.50 842,700 c.mils 0.308 4.23 1.30 0.399 0.378 0.29 0.204
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 8.66 0.284 7.71 0.253 6.78 0.222 6.37 0.209 6.22 0.204
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 63.8 38.7 2.51 1.525
1040 1297 1605 1983 2479 3121
0.00837 0.01317 0.0208 0.0329 0.052 0.0818 0.1288 0.202 0.32 0.499 0.788 1.234 1.938 3.06 4.78 7.47 11.71 18.23 28.8 45.5
0.00231 0.00339 0.0049 0.00694 0.01 0.0143 0.0201 0.0285 0.041 0.0577 0.0821 0.116 0.166 0.236 0.334 0.464 0.66 0.932 1.32 1.83
Core Data
Surface Area
Unwound Core Winding Factor 69.3 94.3 10.7 14.6 4-24
www.mag-inc.com
1.840" 1.130"
46.7mm 28.7mm 15.2mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 47.6 27.9 16.13 1.875 1.098 0.635
0.600"
5089A2
Part Number
High Flux Kool
Permeability
55092-A2 55091-A2 55090-A2 55089-A2 55088-A2 55087-A2 55082-A2 55086-A2 55084-A2
Wire Size Turns (u.w.f.)
58092-A2 58091-A2 58090-A2 58089-A2 (Ohms, (u.w.f.) Single Layer Turns
77091-A7 77090-A7 77094-A7 77093-A7 77089-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 6.11 1.340 11.63 15.58 130.4 95.8 8.19 1,206,000 c.mils 0.208 4.58 0.953 0.287 0.271 0.211 0.1971
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 8.34 0.273 7.12 0.233 5.92 0.194 5.40 0.177 5.20 0.171
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 66.3 39.8 2.61 1.568
1206 1488 1855 2296 2837 3546 4465
0.01153 0.01814 0.0287 0.0453 0.0717 0.1127 0.1774 0.279 0.442 0.688 1.085 2.67 4.22 6.59 10.29 16.13 25.1 39.7 62.7
0.00247 0.0035 0.00494 0.00709 0.01 0.0143 0.0202 0.0293 0.0411 0.0664 0.0828 0.118 0.166 0.236 0.335 0.468 0.666 0.939 1.33 1.86
Surface Area
Unwound Core Winding Factor 4-25 61.7 95.1 9.56 14.74
www.mag-inc.com
2.000" 1.250"
50.8mm 31.8mm 13.5mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 51.7 30.9 14.35 2.035 1.218 0.565
0.530"
5715A2
Part Number
High Flux Kool
Permeability
55718-A2 55717-A2 55716-A2 55715-A2 55714-A2 55713-A2 55709-A2 55712-A2 55710-A2
Wire Size Turns (u.w.f.)
58718-A2 58717-A2 58716-A2 58715-A2 (Ohms, (u.w.f.) Single Layer Turns
77717-A7 77716-A7 77720-A7 77719-A7 77715-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 7.50 1.251 12.73 15.93 98.1 9.38 1,484,000 c.mils 0.194 5.02 0.974 0.312 0.294 0.216 0.226
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 8.51 0.279 7.12 0.234 5.77 0.189 5.18 0.170 4.95 0.162
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 72.4 40.6 2.85 1.600
1187 1484 1832 2282 2826 3491 4363 5495
0.0144 0.0228 0.036 0.0569 0.09 0.1415 0.223 0.35 0.555 0.864 1.363 2.14 3.35 8.28 12.93 20.3 31.6 49.9 78.8
0.0025 0.00369 0.00533 0.00752 0.0108 0.0153 0.0217 0.031 0.0437 0.0622 0.0882 0.121 0.176 0.25 0.354 0.494 0.701 0.989 1.95
Core Data
Surface Area
Unwound Core Winding Factor 64.2 106.3 9.95 16.48 4-26
www.mag-inc.com
2.250" 1.039"
57.2mm 26.4mm 15.2mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 58.0 25.6 16.1 2.285 1.007 0.635
0.600"
5195A2
Part Number
High Flux Kool
Permeability
55190-A2 55191-A2 55192-A2 55195-A2 55196-A2 55197-A2 55198-A2 55199-A2
Wire Size Turns (u.w.f.)
58190-A2 58191-A2 58192-A2 58195-A2 (Ohms, (u.w.f.) Single Layer Turns
77191-A7 77192-A7 77193-A7 77194-A7 77195-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 5.14 2.29 12.5 28.6 11.8 1,014,049 c.mils 0.355 4.93 1.75 0.527 0.497 0.388 0.283
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 9.02 0.296 8.35 0.274 7.62 0.250 7.01 0.230 6.46 0.212
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 75.7 34.0 2.98 1.34
1014 1252 1560 1931 2386 2982 3755
0.00967 0.0151 0.0241 0.0379 0.0601 0.0948 0.149 0.234 0.372 0.58 0.914 1.43 2.25 3.55 5.55 8.67 13.6 21.2 33.5 52.9
0.00267 0.00385 0.00551 0.00801 0.0115 0.0165 0.023 0.033 0.0469 0.0664 0.0948 0.133 0.189 0.269 0.381 0.534 0.752 1.07 1.51 2.10
Surface Area
Unwound Core Winding Factor 91.0 14.1 17.8
4-27
www.mag-inc.com
2.250" 1.400"
57.2mm 35.6mm 14.0mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 58.0 34.7 14.86 2.285 1.368 0.585
0.550"
5109A2
Part Number
High Flux Kool
Permeability
55112-A2 55111-A2 55110-A2 55109-A2 55108-A2 55107-A2 55103-A2 55106-A2 55104-A2
Wire Size Turns (u.w.f.)
58112-A2 58111-A2 58110-A2 58109-A2 (Ohms, (u.w.f.) Single Layer Turns
77111-A7 77110-A7 77214-A7 77213-A7 77109-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 9.48 1.444 14.30 20.65 13.69 1,871,000 c.mils 0.224 5.63 1.260 0.387 0.365 0.280 0.329
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 9.33 0.306 7.76 0.254 6.23 0.204 5.56 0.182 5.30 0.174
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 81.3 44.4 3.20 1.748
1200 1497 1871 2310 2879 3565 4403 5504 6931
0.02 0.0315 0.0498 0.0787 0.1245 0.1957 0.308 0.484 0.767 1.195 1.886 2.95 4.64 7.33 11.45 17.88 43.6
0.00318 0.00453 0.00644 0.0092 0.0133 0.0188 0.0263 0.0376 0.0531 0.0746 0.107 0.152 0.211 0.428 0.596 0.845 1.19 1.69 2.35
Core Data
Surface Area
Unwound Core Winding Factor 76.8 130.7 11.9 20.26 4-28
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3.063" 1.938"
77.8mm 49.2mm 12.7mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 78.9 48.2 13.84 3.108 1.898 0.545
0.500"
5866A2
Part Number
High Flux Kool
Permeability
55869-A2 55868-A2 55867-A2 55866-A2
Wire Size Turns (u.w.f.)
58869-A2 58868-A2 58867-A2 58866-A2
(Ohms, (u.w.f.) Single Layer Turns
77868-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 17.99 1.77 20.0 34.7 31.8 3,550,000 c.mils 0.274 7.72 2.115 0.635 0.599 0.467 0.765
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 10.40 0.340 8.60 0.282 6.90 0.226 6.15 0.202 5.90 0.193
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 54.3 4.40 2.14
1182 1465 1830 2275 2840 3550 4390 5470 6770 8350 10450 13150
0.0422 0.0664 0.105 0.1663 0.262 0.412 0.65 1.022 1.616 2.52 3.98 6.23 15.45 24.2 37.4 59.2 145.8
0.00552 0.00794 0.0113 0.0162 0.0228 0.0325 0.0454 0.0646 0.0912 0.129 0.183 0.258 0.364 0.514 0.732 1.02 1.84 2.61 3.62
Surface Area
Unwound Core Winding Factor 117.5 203.1 18.2 31.49
4-29
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3.063" 1.938"
77.8mm 49.2mm 15.9mm
Core Dimensions (after finish)
O.D. (max.) I.D. (min) (max.) 78.9 48.2 17.02 3.108 1.898 0.670
0.625"
5906A2
Part Number
High Flux Kool
Permeability
55909-A2 55908-A2 55907-A2 55906-A2
Wire Size Turns (u.w.f.)
58909-A2 58908-A2 58907-A2 58906-A2
(Ohms, (u.w.f.) Single Layer Turns
77908-A7 Single Layer Rdc. (Ohms,
Physical Characteristics
Window Area Cross Section Path Length Volume Weight- Weight- High Flux Weight- Kool Area Product 17.99 2.27 19.95 45.3 40.8 3,550,000 c.mils 0.352 7.86 2.77 0.832 0.785 0.615 0.982
Winding Turn Length
WINDING FACTOR 100% (Unity) LENGTH/TURN 11.00 0.361 9.24 0.303 7.53 0.247 6.80 0.223 6.52 0.214
Wound Coil Dimensions
Max. O.D. (u.w.f.) Max. (u.w.f.) 57.7 4.45 2.27
1182 1465 1830 2275 2840 3550 4390 5470 6770 8350 10450 13150
0.0418 0.0705 0.1115 0.1766 0.278 0.437 0.69 1.085 1.716 2.67 4.23 6.61 10.4 16.4 25.7 39.7 62.9 97.7 154.8 243.1
0.00612 0.0088 0.0125 0.018 0.0253 0.036 0.0503 0.0716 0.101 0.143 0.203 0.286 0.404 0.57 0.812 1.13 1.44 2.04 2.89 4.01
Core Data
Surface Area
Unwound Core Winding Factor 225.2 20.1 34.90
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4-30
Kool Core Data
Additional Kool Core sizes being tooled: K1207-E (EF12.6) K3007-E (DIN 30/7) K7228-E (F11) K8020-E (Metric E80)
PART
(min)
(min)
(nom)
(min)
K1808-E (EI-187) K2510-E (E-2425) K3515-E (EI-375) K4017-E 42/11) K4020-E (DIN 42/15) K4022-E (DIN 42/20) K4317-E (EI-21) K5528-E (DIN 55/21) K5530-E (DIN 55/21)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
.760±.012 .319±.007 (19.30) (8.10) 1.000±.010 .375±.005 (25.40) (9.53) 1.360±.015 .557±.005 (34.54) (14.10) 1.687±.025 .830±.007 (42.8) (21.1) 1.687±.025 .830±.007 (42.8) (21.1) 1.687±.025 .830±.007 (42.8) (21.1) 1.609±.015 .650±.006 (40.9) (16.5) 2.16±.025 1.085±.016 (54.90) (27.60) 2.16±.025 1.085±.016 (54.90) (27.60)
.188±.006 (4.78) .250±.004 (6.53) .368±.007 (9.35) .424±.010 (10.8) .608±.010 (15.4) .788±.010 (20.0) .493±.007 (12.5) .812±.015 (20.6) .969±.015 (24.61)
.218 (5.54) .245 (6.22) .380 (9.65) .587 (15.0) .587 (15.0) .587 (15.0) .410 (10.4) .730 (18.5) .730 (18.5)
.548 (13.9) .740 (18.8) .995 (25.3) 1.195 (30.4) 1.195 (30.4) 1.195 (30.4) 1.115 (28.3) 1.476 (37.5) 1.476 (37.5)
.188±.005 (4.78) .250±.005 (6.22) .367±.008 (9.32) .468±.010 (11.9) .468±.010 (11.9) .468±.010 (11.9) .493±.007 (12.5) .660±.015 (16.8) .660±.015 (16.8)
Cross Section (cm2)
.094 (2.39) .125 (3.17) .175 (4.45) .234 (5.95) .234 (5.95) .234 (5.95) .238 (6.0) .330 (8.38) .330 (8.38)
.183 (4.65) .246 (6.25) .310 (7.87) .365 (9.27) .365 (9.27) .365 (9.27) .310 (7.9) .405 (10.30) .405 (10.30)
Volume (cm2)
PART
MH/100 TURNS±8%
Path Length (cm)
K1808-E*** K2510-E*** K3515-E*** K4017-E*** K4020-E*** K4022-E*** K4317-E*** K5528-E*** K5530-E***
4.01 4.85 6.94 9.84 9.84 9.84 7.75 12.3 12.3
0.228 0.385 0.840 1.28 1.83 2.37 1.52 3.50 4.17
0.914 1.87 5.83 12.6 18.0 23.3 11.8 43.1 51.4
material code part number, e.g., complete part number K1808-E060 4-31
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Kool Core Bias
Kool cores available four permeabilities, 26µ, 40µ, 60µ, 90µ. magnetic data each core shown table below. most critical parameter switching regulator inductor material ability provide inductance, permeability, under bias. graph below shows reduction permeability function bias. distributed Kool results soft inductance versus bias curve. most
applications, this swinging inductance desirable since improves efficiency accommodates wide operating range. With fixed current requirement, soft inductance versus bias curve provides added protection against overload conditions. chart below plotted semi-log scale show bias characteristics high currents.
Unit Initial Permeability
Magnetizing Force (Oersteds)
1000
Core Data
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4-32
THINZ Core Data
Special core heights available, consult factory.
PART nom. nom. nom. max. min. max.
M-0301-T M-0302-T M-0402-T M-0502-T M-0603-T M-0804-T
(mm) (mm) (mm) (mm) (mm) (mm)
.120 (3.05) .140 (3.55) (3.94) .181 (4.60) .250 (6.35) .310 (7.87)
.070 (1.78) .070 (1.78) .088 (2.23) .093 (2.36) .110 (2.79) .156 (3.96)
.032 (.81) .032 (.81) .032 (.81) .032 (.81) .032 (.81) .032 (.81)
.123 (3.12) .143 (3.63) .159 (4.04) .185 (4.70) .255 (6.47) .315 (8.00)
.067 (1.70) .067 (1.70) .084 (2.13) .089 (2.26) .105 (2.67) .151 (3.83)
.035 (.89) .035 (.89) .035 (.89) .035 (.89) .035 (.89) .035 (.89)
PART 125µ
MH/1000 TURNS±15% 160µ 200µ 250µ
Path Length (cm)
Cross Section (cm2)
Volume (cm3)
M0301-T*** M0302-T*** M0402-T*** M0502-T*** M0603-T*** M0804-T***
11.6 11.7 14.9 12.6
10.8 14.8 12.3 15.0 19.1 16.2
13.5 18.7 15.4 18.7 24.0 20.2
16.9 23.4 19.3 23.4 30.0 25.3
.704 .806 .944 1.058 1.361 1.789
.0040 .0060 .0058 .0079 .0130 .0145
.0028 .0048 .0055 .0083 .0177 .0259
material code part number, e.g., 125µ complete part number M0502-T125
4-33
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THINZ Bias
THINZare available four permeabilities, 125µ, 160µ, 200µ, 250µ. most critical parameter power inductor material ability provide inductance, permeability, under bias. distributed results soft inductance versus bias curve. This swinging inductance often desirable since improves efficiency accommodates wide operating range. With fixed current requirement, soft
inductance versus bias curve provides added protection against overload conditions. With variable current requirement more efficient inductor achieved. graph below shows reduction permeability function bias. This graph plotted semi-log scale show bias characteristics high magnetizing forces. following equation used relate current magnetizing force,
where: Magnetizing force Oersteds number turns current amps magnetic path length
Unit Initial Permeability
Magnetizing Force (Oersteds)
Core Data
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4-34
Hardware
TV-B2206-6A
Usable with toroids from 12.7mm (0.500") through 22.2mm (0.875")
Material Phenolic rated UL94V0 Pins Nom. Nom. 5.5mm 0.216" Nom. 10.8mm 0.425"
Nom. 3.5mm 0.138" Ref. 4.8mm 0.189" Typ. 6.0mm 0.236"
Bottom View
Typ. 7.5mm 0.295"
Ref. 2.0mm 0.079"
Ref. 5.5mm 0.216"
1.0mm 19.0mm wire 0.748"
TV-B2908-TA
Usable with toroids from 20.5mm (0.810") through 31.8mm (1.250")
Material Phenolic rated UL94V0 Pins Nom. Nom. 7.5mm 0.295" Nom. 19.0mm 0.748"
Bottom View
Nom. 5.0mm 0.197" Ref. Typ. Typ. 5.0mm 0.197" Ref. 3.5mm 0.138" Ref. 8.13mm 0.320"
1.0mm 27.0mm wire 1.063"
11.0mm 15.0mm 0.432" 0.590"
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Hardware
TV-B3610-FA
Usable with toroids from 28.6mm (1.125") through 38.1mm (1.500")
Material Phenolic rated UL94V0 Pins
Bottom View
Nom. Nom. Nom. Nom.
Ref. Typ. Typ. Typ. 6.3mm 0.248" Ref. Ref.
1.0mm 35.8mm wire 1.409"
7.6mm 20.8mm 0.299" 0.819"
5.0mm 12.3mm 16.0mm 5.0mm 0.197" 0.484" 0.630" 0.197"
4.5mm 9.75mm 0.177" 0.384"
TV-H2206-4A
Usable with toroids from 12.7mm (0.500") through 25.4mm (1.000")
Material Nylon rated UL94V0 Pins Nom. Nom. 3.9mm 0.155"
View
Nom. 10.8mm 0.425" Ref. 9.8mm 0.385" Typ. 6.4mm 0.250" Typ. Typ. Typ.
Hardware
0.040" 19.0mm wire 0.750"
15.2mm 3.3mm 0.600" 0.130"
3.8mm 0.150"
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Hardware
TV-H2507-4A
Usable with toroids from 20.5mm (0.810") through 30.5mm (1.200")
Material Nylon rated UL94V0 Pins Nom. Nom. 5.1mm 0.200"
View
Nom. Ref. Typ. Typ. Typ. Typ. 5.1mm 0.200"
wire 25.4mm 0.050" 1.000"
15.2mm 13.0mm 10.2mm 20.33mm 2.3mm 0.600" 0.510" 0.400" 0.800" 0.090"
TV-H3813-4A
Usable with toroids from 25.4mm (1.000") through 40.6mm (1.600")
Material Nylon rated UL94V0 Pins Nom. Nom. 5.1mm 0.200"
View
Nom. Ref. Typ. Typ. Typ. Typ. 5.1mm 0.200"
wire 27.9mm 0.050" 1.100"
20.3mm 18.0mm 15.2mm 22.9mm 2.3mm 0.800" 0.710" 0.600" 0.900" 0.090"
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Hardware
TV-H4196-4A
Usable with toroids from 38.1mm (1.500") through 63.5mm (2.500")
Material Nylon rated UL94V0 Pins Nom. Nom. 5.1mm 0.200"
View
Nom. Ref. Typ. Typ. Typ. Typ. 5.1mm 0.200"
wire 35.6mm 0.050" 1.400"
22.9mm 20.6mm 17.8mm 30.5mm 2.3mm 0.900" 0.810" 0.700" 1.200" 0.090"
TV-H6113-4A
Usable with toroids from 44.4mm (1.750") through 71.1mm (2.800")
Material Nylon rated UL94V0 Pins Nom. Nom. 5.1mm 0.200"
View
Nom. Ref. Typ. Typ. Typ. Typ.
Hardware
wire 43.2mm 0.050" 1.700"
27.9mm 25.7mm 22.9mm 38.1mm 2.3mm 1.100" 1.010" 0.900" 1.500" 0.090"
5.1mm 0.200"
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Kool Core Hardware
horizontal mount printed circuit bobbin available each Kool E-core size. Plain un-pinned, bobbins also available most sizes. Refer Magnetics Ferrite Cores catalog FC-601, section details. cores standard industry sizes that will standard bobbins available from many sources. Core pieces assembled bonding mating surfaces taping around perimeter core set.
Winding Area Core Number Bobbin Number Number Pins Winding Area (cm2) Winding Area (in2) Length Turn Length Turn (cm) Length Turn (ft)
K1808-E (EI-187) K2510-E (E-2425) K3515-E (EI-375) K4020-E (DIN 42/15) K4022-E (DIN 42/20) K4317-E (EI-21) K5528-E (DIN 55/21) K5530-E (DIN 55/25)
PC-B1808-81 PC-B2510-T1
0.316 0.406
0.049 0.063
4.05 5.42
0.133 0.178
PC-B3515-L1
0.948
0.147
7.34
0.241
PC-B4020-L1 PC-B4022-L1
1.94 1.94
0.300 0.300
9.14 10.21
0.300 0.335
PC-B4317-L1
1.01
0.156
8.56
0.281
PC-B5528-WA
3.02
0.468
10.73
0.352
PC-B5530-FA
2.89
0.448
13.38
0.439
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Notes
Hardware
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Other Products From Magnetics
Ferrite Cores
telecommunications high filter inductors, high purity manganese-zinc ferrite cores exhibit loss characteristics exceptionally disaccommodation. They available with linear temperature characteristics (-30°C +70°C) permeabilities 2000, flat temperature characteristics (+20° +70°C) 2300 permeability material. transformer applications, inductance ungapped cores above materials guaranteed ±25%. filters, cores gapped standard inductance factors guaranteed ±3%. Twentythree physical sizes stocked; each size offers variety standard inductance values. Toroids, E-cores, cores, cores, other shapes also available high frequency inductor power transformers. these applications, four loss power materials with permeabilities 1500, 2300, 2500, 3000 available. Many these same shapes also available high permeability materials 5,000µ, 10,000µ, 15,000µ EMI/RFI filters broadband transformers. further information view Ferrite Cores Catalog (FC-601) www.mag-inc.com. SHAPES: cores, Toroids, Cores, Other Shapes APPLICATIONS: Inductors, Filters, Delay Lines, Transformers, etc.
Bobbin Cores
Miniature Tape Wound Bobbin Cores manufactured from Permalloy Orthonol, amorphous alloy 2714A ultra-thin tape (0.000125" 0.001" thick). They available widths from 0.023" 0.250" (wider special request). Wound non-magnetic stainless steel bobbins, core diameters available down 0.050", with flux capacities several maxwells. MAGNETICS sophisticated pulse test equipment reproduces most test programs measure accurately millivolt-microsecond region. Standard sizes available from stock. further information view Bobbin Core Catalog (BCC-1.1) www.mag-inc.com. APPLICATIONS: Magnetometers, Flux Gates, High Frequency Counters, Timers, Oscillators, Inverters, Magnetic Amplifiers.
Cores
SUPERMENDUR C-cores E-cores used power transformers frequencies 1500 where minimum weight size required. PERMALLOY C-cores ideal output transformer high frequency, high power inverters. core loss these cores makes them suitable 5000 gauss, frequencies kHz. Other uses: high power pulse transformers, high frequency inductors, loss current transformers. ORTHONOL® C-cores have saturation flux density 15,000 gauss, core loss approximately one-half that silicon-iron C-core same material thickness. These cores suitable power transformers operating flux densities 10,000 gauss, frequencies kHz. Amorphous alloy cores offer losses flux densities comparable cores. These alloys attractive magnetic core devices where ruggedness weight important. further information view Core Catalog (MCC-100) www.mag-inc.com.
Tape Wound Cores
Tape Wound Cores made from high permeability alloys nickel-iron, grain oriented silicon-iron, cobalt-iron. alloys known Orthonol®, Alloy Square Permalloy Round Permalloy, Supermalloy, Magnesil®, Supermendur, amorphous alloys. Cores available IEEE standard sizes over 1,400 special sizes. wide range frequency applications, materials produced thicknesses from (0.013mm) through mils (0.356mm). core sizes provided non-metallic (phenolic plastic), aluminum, (Guaranteed Voltage Breakdown) coated aluminum boxes. Magnesil® material, being less sensitive external stresses, also available unboxed epoxy encapsulated. Commonly used sizes stock immediate shipment. further information view Tape Wound Core Catalog (TWC-500) www.mag-inc.com. APPLICATIONS: Magnetic Amplifiers, Converters, Inverters, Reactors, Regulators, Static Magnetic Devices
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Website Enhanced
newly redesigned MAGENTICS website contains wealth easy access information soft magnetic cores materials. Some most important features website are: MAGNETICS Digital Library contains company's technical bulletins, white papers, design manuals, which viewed on-screen downloaded. Software section website provides access MAGNETICS software design aids designing Common Mode Filters, Current Transformers, Inductors, MagAmps. product specifications ferrite cores, powder cores, strip wound products, specialty metals quickly found using menu driven product locator. Contact Application Engineering page allows users quickly contact Application Engineering staff assistance. News section website keeps users date latest product introductions developments.
Available
MAGNETICS just developed interactive that contains company's publicly available design manuals, technical literature, design software. small 3-inch format easy portability compatible. allows user view, print, software design aids directly from This free available from MAGNETICS company's distributors agents. request free visit MAGNETICS website www.mag-inc.com.
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