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Material Properties

PERMEABILITY VS. T, B, & F ­ TYPICAL Permeability (µ) µ vs. T dynamic range (-50° C to +100°C) Painted cores usuable to 200°C µ vs. B dynamic range 50 to 4000gauss (peak at 1000 gauss) µ vs. F. flat to..

Material Properties
PERMEABILITY VS. T, B, & F - TYPICAL Permeability (µ) µ vs. T dynamic range (-50° C to +100°C) Painted cores usuable to 200°C µ vs. B dynamic range 50 to 4000gauss (peak at 1000 gauss) µ vs. F. flat to..
9 MHz 5 MHz 2.7 MHz 1 MHz 700 kHz 700 kHz 700 kHz 500 kHz 150 kHz 90 kHz 8 MHz 2.5 MHz 1.2 MHz 600 kHz 400 kHz 350 kHz 20 MHz 8 MHz 3 MHz 2 MHz 1 MHz
MPP Cores
High Flux Cores
Kool Mµ Cores
Material porperties above only apply to toroids, not THINZ or E cores.
Curie Temperature Density Coefficient of Thermal Expansion Thermal Conductivity
Temperature
MPP Cores High Flux Cores Kool Mµ Cores
460°C 500°C 500°C
8.7 grams / cm3 8.2 grams / cm3 7.0 grams / cm3
12.9 x 10-6 / °C 5.8 x 10-6 / °C 10.8 x 10-6 / °C
0.8 Watts / (cm x 0K) 0.8 Watts / (cm x 0K) 0.8 Watts / (cm x 0K)
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Conversion Tables
Multiply Multiply number of by to obtain number of
MPP, High Flux, Kool Mµ MPP, High Flux, Kool Mµ MPP, High Flux, Kool Mµ MPP, High Flux, Kool Mµ MPP High Flux Kool Mu
oersteds gauss in2 circular mils watts / lb. watts / lb. watts / lb.
.795 .0001 6.425 5.07 x 10-6 19.17 18.07 15.42
amp-turns / cm tesla cm2 cm2 mWatts / cm3 mWatts / cm3 mWatts / cm3
Core weights listed in this catalog are for 125µ cores. To determine weights for other permeabilities, multiply the 125µ weight by the following factors: 147µ 160µ 173µ 1.02 200µ 300µ
Permeability
Technical Data
x Factor
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Normal Magnetization Curves, MPP
Flux Density (Kilogauss)
Magnetizing Force (Oersteds)
Normal Magnetization Curves, High Flux
Flux Density (Kilogauss)
Magnetizing Force (Oersteds)
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Normal Magnetization Curves, Kool Mµ®
Flux Density (kilogauss)
Technical Data
Magnetizing Force (oersteds)
Normal Magnetization Curve Fit Formula
(refer to curves for units)
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
-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 Mµ
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Core Loss Density Curves, MPP 14µ
Typical Core Loss (mw / cm)
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 14µ
Typical Core Loss (mw / cm)
Flux Density (kilogauss)
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Core Loss Density Curves, MPP 26µ
Typical Core Loss (mw / cm3)
Technical Data
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 26µ
Typical Core Loss (mw / cm3)
Flux Density (kilogauss)
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Core Loss Density Curves, MPP 60µ
Typical Core Loss (mw / cm)
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 60µ
Typical Core Loss (mw / cm3)
Flux Density (kilogauss)
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Core Loss Density Curves, MPP 125µ
Typical Core Loss (mw / cm)
Technical Data
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 125µ
Typical Core Loss (mw / cm)
Flux Density (kilogauss)
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Core Loss Density Curves, MPP 147µ / 160µ / 173µ
Typical Core Loss (mw / cm)
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 147µ / 160µ
Typical Core Loss (mw / cm)
Flux Density (kilogauss)
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Core Loss Density Curves, MPP 200µ / 300µ
Typical Core Loss (mw / cm3)
Technical Data
Flux Density (kilogauss)
Core Loss Density Curves, High Flux 550µ
Typical Core Loss (mw / cm)
Flux Density (kilogauss)
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Core Loss Density Curves, Kool Mµ®
Typical Loss Density (mw / cm3)
Flux Density (kilogauss)
Unlike MPP and High Flux, the typical loss density of Kool Mµ does not vary significantly with permeability therefore, only one material curve is shown.
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Permeability versus Temperature Curves, MPP (A2, AY, A5, A9)
Per Unit of Initial Permeability (typical)
Technical Data
Temperature, °C
AY coating maximum steady-state operating temperature is 130° C.
Permeability versus Temperature Curves, MPP (A2, AY, A5, A9)
Per Unit of Initial Permeability (typical)
Temperature, °C
AY coating maximum steady-state operating temperature is 130° C.
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Permeability versus Temperature Curves, High Flux
Per Unit of Initial Permeability (typical)
Temperature, °C
Permeability versus Temperature Curve Fit Formula
(refer to curves for units)
where:
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
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Permeability versus Temperature Curves, Kool Mµ
Per Unit of Initial Permeability (typical)
Technical Data
Temperature, °C
Permeability versus Temperature Curve Fit Formula
(refer to curves for 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
where:
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Permeability versus DC Bias Curves, MPP
Per Unit of Initial Permeability
DC Magnetizing Force (Oersteds)
This curve only applies to MPP toroids. The MPP THINZ DC Bias curve can be found on page (4-35).
Permeability versus DC Bias Curves, High Flux
Per Unit of Initial Permeability
DC Magnetizing Force (Oersteds)
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Permeability versus DC Bias Curves, Kool Mµ®
Per Unit of Initial Permeability
Technical Data
DC Magnetizing Force (oersteds)
This curve only applies to Kool Mµ toroids. The Kool Mµ E core DC Bias curve can be found on page (4-33).
Permeability versus DC Bias Curve Fit Formula
(refer to curves for units)
High Flux
Kool Mµ
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Permeability versus AC Flux Curves, MPP
Per Unit of Initial Permeability
AC Flux Density (gauss)
Permeability versus AC Flux Curves, High Flux
Per Unit of Initial Permeability
AC Flux Density (gauss)
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Permeability versus AC Flux Curves, Kool Mµ®
Per Unit of Initial Permeability
Technical Data
AC Flux Density (gauss)
Permeability versus AC Flux Curve Fit Formula
(refer to curves for units)
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 and Kool Mµ:
where:
High Flux Kool Mµ
-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
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Permeability versus Frequency Curves, MPP
Per Unit of Initial Permeability
Frequency (MHz)
Permeability versus Frequency Curves, High Flux
Per Unit of Initial Permeability
Frequency (MHz)
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Permeability versus Frequency Curves, Kool Mµ®
Per Unit of Initial Permeability
Technical Data
Frequency (MHz)
Permeability versus Frequency Curve Fit Formula
(refer to curves for 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
High Flux Kool Mµ
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Wire Table
AWG Wire Size
Wire Area Circ. sq. cm Mils (x0.001)
Current Capacity, Amps (listed by columns of amps / sq.cm.) 200 800 400 600
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