Capacitor Advantages over Ceramics Paktron been manufacturing fil
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MULTILAYER POLYMER CAPACITORS
Capacitor Advantages over Ceramics
Paktron been manufacturing film capacitors over years. Paktron parent, Illinois Tool Works Inc., hold excess seventyfive patents film capacitors machine design. Paktron specializes Ultra multilayer polymer film capacitors leads Film-Chip designs. Capacitors featured are: Angstor® Miniature Radial Capstick® Lead-Framed Surfilm® Surface Mount Chip Other famous lines featured are: Quencharc® Network/Snubber metallized electrode used Paktron's proprietary Interleaf® Technology process assures reliable performance. Multilayer Polymer (MLP) surface mount, chip lead framed capacitors replacing (ceramic) capacitors higher voltage reliability-sensitive equipment. This includes popular volt telecom bus, off-line HVAC front ends. Today, fastest-growing market segment that Paktron serves Power Conversion Telecommunications. volt rated film capacitor becoming part choice input/output filtering volt telecom power applications (onboard dc/dc modules). capacitor provides improved stability, both electrically mechanically, compared multilayer ceramics. features "non-shorting" operation does crack like large ceramic blocks.
Multilayer Polymer Film (MLP)
Stable under voltage Stable under voltage Chip plastic with good Stable over temperature aging mechanism Resilient under thermal shock Self-clearing thin electrodes Stable under mechanical stress cost Ultra Dissipation Factor
Ceramic (MLC)
drops volts bias increases with voltage Body ceramic which cracks increases temperature drops decade hour Ceramic body cracks easily Thick film electrodes fail short Piezoelectric voltage sensitive Precious metal electrodes Dissipation Factor 2.5%
TYPICAL CHARACTERISTICS
following graphs contrast important characteristics Capsticks ceramic units typical, dynamic converter conditions. electrical stability capacitor clear.
Frequency
10000 (milliohms)
Temperature
(ohms)
Capstick
1000
Capstick
0.01
1000
10000
Frequency (KHz)
Dissipation Factor Vrms
Capacitance Bias
Cap. Change 0.00 -10.00 -20.00 -30.00 -40.00 -50.00 Capstick Bias (volts)
Capstick
Vrms Volts 1KHz)
PAGE Paktron P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 Phone 434-239-6941 434-239-4730 www.paktron.com
PRODUCT INDEX
Click Below Details Paktron's Premier Line Multilayer Polymer (MLP) Capacitors.
CS/CB Q/QRL
INDEX
Category
Series
Case Style
Lead Style
Voltages
Capacitance
Page Number
Metallized PET-SMD (Low Shrinkage Polyester) dielectric
Angstor Capstick Capstick Surfilm Taped Epoxy coated Shell Chip Radial Lead frame Lead frame Surface mount 0.33 20.0 10.0
Metallized (Polyester) dielectric with series resistor (snubber network)
Quencharc Q/QRL Epoxy coated Radial 1600
Soldering Guidelines Distributor List
Back Cover
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Capacitor Type
NENGS
Efficient size Rugged construction Does fail short Self healing ESR/ESL entrapped moisture self-encased design dissimilar metals chemically degrade attract moisture High dv/dt Wave solderable Operating temperature range: -55°C +125°C Made U.S.A.
VDC/ VDC/160
S=.394 10mm L=.450 11.4mm S=.591 15mm L=.650 16.5mm
VDC/250
S=.591 15mm L=.650 16.5mm
Capacitance
S=.295 7.5mm L=.350 8.9mm
S=.394 10mm L=.450 11.4mm
CODE
.280
.190 .250
.305 .330 .305
.230
.340
ANGSTOR
405**
.155
.180
.305 .175 .205 .250 .200 .285 .285 .350 .380
.210
.290 .240 .340
.440 11.1
Line Capacitor: RA4AC VDC/115 VAC/240
.160
.255
ELECTRICAL
TOLERANCE Available 10%, DISSIPATION FACTOR 1.0% @25°C, 1KHz INSULATION RESISTANCE 1000 Megohm Need exceed 1,000 Megohms Test voltage minute: Rated Voltage >100 Test Voltage DIELECTRIC STRENGTH WVDC. Sec. WVDC. Sec. (bold parts) SELF INDUCTANCE MAX. PULSE RISE RATE dv/dt: 100V/µ Sec. TEMPERATURE RANGE -55°C 125°C rated voltage -55°C 85°C bold parts* 125°C derate voltage (bold parts)
ENVIRONMENTAL
LIFE 1,000 Hours, 85°C, 1.25 WVDC C/C< 1KHz, 25°C 103M MOISTURE RS-377, 3.12, hrs. C/C< 1KHz, 25°C 103M after hrs. LONG TERM STABILITY After years storage, std. environment C/C<
PHYSICAL
VIBRATION Method 204D PACKAGING Bulk SOLDER RESISTANCE 250°C, Sec. C/C< CONSTRUCTION Non-inductively constructed with metallized polyester dielectric. MLP, Multilayer Polymer. CASE Polyester tape. WIRE LEADS (.025) 4.** (.032) MARKING Capacitance, tolerance, working voltage manufacturer printed container. Parts continuously marked ITW® code.
Wire Leads (.032)
PAGE Paktron P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 Phone 434-239-6941 434-239-4730 www.paktron.com
Angstor® Capacitor Application Notes
Paktron developed highly advanced Interleaf® Technology method capacitor manufacturing improve device electrical properties stability actual conditions. opposed conventional winding method, Interleaf® Technology uses high laminating pressure, linear stacking technology. resulting capacitor chip construction hybrid resembling multilayer ceramic capacitor cross section, while offering fail-safe advantages stacked plastic film capacitor. refer resultant parts multilayer polymer. Angstor® Capacitor Style) self-encased, metallized film capacitor which features small size, high dv/dt capability very high frequency. Intended through-hole wired applications, units feature aluminum electrodes terminals that pulse welded lead wires. units back impregnated with microcrystalline polymer sealant, require external coatings moisture protection. internal layers heavily laminated eliminate from core material which improves high frequency response compared competitive units. Operating temperature limit extended to125 degrees following examples applications wherein Angstor's unique features have proven desirable: HIGH FREQUENCY SWITCHING POWER INPUTS modern power converter broke switching frequency barrier, ripple voltage control components changed drastically. input side volt converters, capacitor needed filter network control generated switching MOSFET. Metallized film capacitors should used because voltage bias unit's ability "clear" during high voltage event, rather than short like common capacitor. Electrolytic (aluminum tantalum) capacitors useful because
EXAMPLE: CODE TOLERANCE
their extremely high parasitic resistance inductance. Under ripple voltage Angstor stable, while ceramic capacitors increase loss factor, creating incremental losses. LINE DATA LINE NOISE SUPPRESSION volt Angstor will lose value bias voltage used higher voltage lines differential noise bypass control. High input dv/dt volts micro second handled. modems, Angstor space efficient alternative other input current control devices. Since capacitor body "plastic" there exists piezoelectric input di/dt. EMI/RFI SUPPRESSION Noise suppression required variety motors field effect devices close offending source minimize voltage bus. Noise transients emanating from switched state motors inductors require capacitor part filtering arrangement. Angstor excellent choice these volt bus-rails because small size compared other film capacitors better reliability than ceramic capacitors. automotive voltage rises from 36/42 volts, this technology will replace many ceramic tantalum capacitors because enhanced voltage coefficient (stability). GRACEFUL AGING There exists chemical interactions within Capacitor effect long term life. parts suitable year life applications their stability inherently loss. polymer dielectric becomes more crystalline over long periods time, which gradually lower capacitance value. thin-film metallized electrodes capable "self healing" under high voltage events. This feature avoids shorting, cracking rapid heat generation problem often found ceramic capacitors.
ORDER
VOLTAGE 100V 250V 400V 240VAC
TYPE
LEAD SPACING
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Typical Performance Curves Comparison Multilayer Polymer (RA) Multilayer Ceramic (X7R)
Capacitance Change
Capacitance Change Temperature -10% Dissipation Factor Temperature X7R-MLC
X7R-MLC
Temperature (°C)
Capacitance Change
Temperature
Capacitance Change Volts X7R-MLC
Dissipation Factor Volts KHz) X7R-MLC
DF(%)
Voltage (Vrms)
Capacitance Change
Capacitance Change Frequency
Voltage (Vrms)
Dissipation Factor Frequency
X7R-MLC
X7R-MLC
Frequency
Capacitance Change
Capacitance Change Bias X7R-MLC
Frequency
Capacitance Change
Capacitance Time (Aging)
1000
X7R-MLC
10000
100000
Bias (volts)
Time (Hrs.)
PAGE Paktron P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 Phone 434-239-6941 434-239-4730 www.paktron.com
Typical Performance Curves Selected High Value "Power" Capacitors
10,000.000
10.000 10,000.000
Impedance Frequency
1000.000 100.000
Impedance Frequency
100.000
1000.000 10.000
(Ohms) (Ohms) (Ohms)
Impedance (Ohms)
1.000 10.000
(Ohms)
Impedance (Ohms)
100.000 10.000
1.000 1.000 0.100 0.010
1.000 0.100 0.100 0.010 0.001
0.100 Impedance 1,000 10,000 100,000 Frequency 1,000,000 0.010 10,000,000
Impedance 1,000 10,000 100,000 Frequency 1,000,000 0.010 10,000,000
0.001
1000.000
10.000 10,000.000
Impedance Frequency
Impedance Frequency
10.000
100.000
1000.000
Impedance (Ohms)
10.000
1.000
(Ohms)
Impedance (Ohms)
100.000 1.000 10.000
1.000
1.000 0.100 0.100 0.010
0.100
0.100
0.010 Impedance 0.001 1,000 10,000 100,000 Frequency 1,000,000 0.010 10,000,000 Impedance 1,000 10,000 100,000 Frequency 1,000,000 0.010 10,000,000
0.001
1000.000
10.000 10,000.000
Impedance Frequency
100.000
Impedance Frequency
10.000
1000.000
Impedance (Ohms)
10.000
1.000
(Ohms)
Impedance (Ohms)
100.000 1.000 10.000
1.000
1.000 0.100 0.100 0.010
0.100
0.100
0.010 Impedance 0.001 1,000 10,000 100,000 Frequency 1,000,000 0.010 10,000,000 Impedance 1,000 10,000 100,000 Frequency 1,000,000 0.010 10,000,000
0.001
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Capacitor Types
Surface mount capability Ideal high frequency switching power supplies converters ESR/ESL High ripple current/ High capacitance Operating temperature range: -55°C 125°C Volumetrically efficient Made U.S.A.
Voltage Ratings Note: Like film capacitors, Capstick capacitors have "true" voltage ratings unlike other dielectric systems require voltage deratings maximizing reliability (MTBF) life. With rates well under when used rated voltage, these units provide only positive contribution circuit MTBF calculations. Circuit designers requiring volt ratings other dielectric systems their volt input applications being penalized that system's inherent deficiencies. film capacitor industry device rated certain voltage, then device designed fully functional reliable that voltage life equipment. Many leading edge circuit designs take advantage film capacitor's inherent reliability rated voltage both reduce board size improve performance.
CAPSTICK
Capacitance
10.0 10.0 20.0
Code
Voltage
Current
Dimensions (inches)
Leads side
Type
.011 .008 .012 .011 .008 .009 .007 .006 .003 .003 .0025
11.5 12.2 15.3 15.3 17.8
.700 .700 .700 .700 .700 .500 .500 .500 .500 .500 .500
.320 .320 .320 .320 .320 .250 .250 .250 .250 .320 .320
.625 1.135 .435 .460 .880 .450 .450 .525 .995 .620 1.150
ELECTRICAL
CAPACITANCE RANGE 0.33 20.0 1KHz VOLTAGE RANGE 100, 400, TOLERANCE DISSIPATION FACTOR 1.0% 1KHz INSULATION RESISTANCE 1,000 Megohm
Need exceed 1,000 Megohms Test voltage minute: Rated Voltage >100 Test Voltage
TEMPERATURE COEFFICIENT from -55°C 85°C SELF INDUCTANCE <6nH (Typical) <4nH (Typical)
PHYSICAL
CONSTRUCTION Non-inductively constructed with metallized polyester dielectric. MLP, Multilayer Polymer. LEAD MATERIAL Tinned Alloy Lead Frame LEAD SPACING .600" (15.0mm) nominal CS6, .400" (10.0mm) nominal
DIELECTRIC STRENGTH Rated Voltage: 50/100/500 Rated Voltage: ORDER
CASE UL94V0 Rated Epoxy Coating COMPONENT MARKING ITW, Type, Capacitance Code, Tolerance Code, Voltage TEMPERATURE RANGE -55°C 85°C, with voltage derating: 50/100 -55°C 125°C, with voltage derating: 400/500 125°C derate voltage 50%. PACKAGING Anti-static Tube packed with desiccant moisture barrier bag. JEDEC level package.
EXAMPLE: ±10% CODE TOLERANCE
VOLTAGE
TYPE
LEAD STYLE part number Gull-wing leads required
PAGE Paktron P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 Phone 434-239-6941 434-239-4730 www.paktron.com
Capacitor Type
Second Generation High Frequency Switching Power Supply Capacitors
Ideal volt input output impedance (ESR/ESL) construction Self healing-Avoids shorts reliable solution ceramic tantalum capacitor faults elevated voltage Made >100KHz switching power trains reflected Flat surface pick place Surface mount capability Operating temperature range: -55°C 125°C High ripple current/High capacitance Volumetrically efficient Made U.S.A.
Capacitance
10.0
Code
Voltage
Current
Dimensions (inches)
Leads side
Type
CAPSTICK
.009 .007 .006 .003
11.5 12.2 15.3
.500 .250 .450 .500 .250 .450 .500 .250 .525 .500 .250 .995
ELECTRICAL
CAPACITANCE RANGE 10.0 1KHz VOLTAGE RANGE TOLERANCE DISSIPATION FACTOR 1.0% 1KHz INSULATION RESISTANCE 1,000 Megohm
Need exceed 1,000 Megohms Test voltage minute: Rated Voltage Test Voltage
PHYSICAL
CONSTRUCTION Non-inductively constructed with metallized polyester dielectric. MLP, Multilayer Polymer. LEAD MATERIAL Tinned Alloy Lead Frame LEAD SPACING .400" (10.0mm) nominal CASE UL94V0 Rated Shell COMPONENT MARKING ITW, Type, Capacitance Code, Tolerance Code, Voltage TEMPERATURE RANGE -55°C 85°C, with voltage derating: 125°C derate voltage 50%. PACKAGING Tape/Reel packed with desiccant moisture barrier bag. JEDEC level package.
DIELECTRIC STRENGTH Rated Voltage TEMPERATURE COEFFICIENT from -55°C 85°C SELF INDUCTANCE <4nH (Typical)
ORDER
EXAMPLE: ±10% CODE TOLERANCE VOLTAGE
TYPE
LEAD STYLE part number Gull-wing leads required
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ESR, MULTILAYER POLYMER (MLP) CAPACITORS
Miniaturized pass filters made possible high frequency switching technology need tiny capacitors attenuate ripple reflected over wide frequency bands. With equivalent series resistance approaching zero, non-polar Capacitors reliably sink high ripple currents high density converters, cool stable.
trend toward distributed power management modular power converters driven development high efficiency, profile power train components. conventional capacitors historically used ripple filtering applications either large suitable popular methods surface mounting. Electrolytic capacitors, while size efficient, provide desired, stable electrical characteristics reliability. Large value multilayer ceramic capacitors notoriously fragile, expensive unstable over voltage temperature extremes. novel proven capacitor technology, built upon selected manufacturing techniques multilayer ceramic stacked, plastic film capacitors preferred choice. film capacitor reliability found chip block shaped capacitors that approach board space sizes X7R, (Ceramic) types. These unique multilayer polymer capacitors (MLP's) offer excellent electrical stability under current loads subject cracking, shorting mismatch inherent Ceramic (MLC) capacitor products. They suitable input output filter capacitors megahertz frequency switching converters, high power ballasts inverter drives ambient temperatures from -55° 125°
PERFORMANCE TESTING
ACCELERATED LIFE: Test Conditions Temperature: 85°C 5.0°C Applied Voltage: 1.25 Rated Voltage Test Duration: 1000 hours Performance Requirements Capacitance: 5.0% Dissipation Factor: 1.0% 1KHz Insulation Resistance: Megohms Need exceed Megohms HUMIDITY: Test Conditions Temperature: 85°C 2.0°C Applied Voltage: Zero Voltage Humidity: Test Duration: days Performance Requirements Capacitance: 7.0% Dissipation Factor: 1.0% 1KHz Insulation Resistance: initial limit SOLDERABILITY: Test Conditions Solder Temperature: 250°C 5.0°C Test Duration: seconds sec. Performance Requirements Capacitance: Capacitance Drift 2.0%
Figure
impedance equivalent series resistance needed reliable high frequency current handling. Capstick Capacitor increase series current converter which translates into higher wattage density maximum efficiency.
NOTES USABILITY RELIABILITY
Because well known dielectric ultra thin sheet, reliability these capacitors better than industry experience with electrolytic ceramic capacitors. There exists capacitance drop aging with time. dissipation factor stable over time. insulation resistance tends better under influence heat voltage. have shown that in-circuit problems evident immediately usually result mishandling overheating during mounting assembly. There exist metal leaching dielectric diffusion mechanisms affect reliability over time. complete reliability data package this other quality capacitor styles obtained contacting Paktron.
ULTRA IMPEDANCE CONSTRUCTION
Figure illustrates multiple stacking technique used make structures cross section which highlights similarities stacked film construction. aluminum electrode termination construction results resistance high current connection. terminations gathered multiple lead frames lowest current handling. loss frequency stable, ultra thin polyethylene-terephthalate polymer film used dielectric.
MOUNTING OPTIONS
Capstick conditioned surface mounting (including Reflow). Leads trimmed dimension butt through-hole mounting, configured gull wing leads. Appendix Capstick soldering guidelines.
DRIVEN HIGH FREQUENCY POWER CONVERSION APPLICATIONS
trend power conversion increase switching frequency minimize size magnetic filter components boost wattage unit volume. Driven portable computers distributed power approaches both telecom computer systems, switching frequencies have risen from kilohertz between megahertz high density power converters. filter capacitors have become important issue
2.0% over years temperature between 35°C between 65%. Vibration Conforms MIL-STD-202 Method 204D. Special note: 400V rating handle 450V surge built 640V high potential
PAGE Paktron P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 Phone 434-239-6941 434-239-4730 www.paktron.com
CS/CB Performance Characteristics
MAXIMUM CURRENT (AMPS) FREQUENCY
Value Rated 1MHz Value Rated
MAXIMUM VOLTAGE FREQUENCY
1MHz
10.0 10.0 20.0
13.3
10.2 10.8 14.1 14.0 16.7
11.5 12.2 15.3 15.3 17.8
10.6 10.5 12.0 12.6 15.6 15.6 18.0
10.0 10.0 20.0
13.1 17.2 13.1
TYPICAL APPLICATIONS
Input Load
Vout
Input
Output Filter
High Voltage Input Filter
Quasi Input Filter
Pass Filter
TYPICAL IMPEDANCE FREQUENCY
Impedance (milliohms)
10000 10000
CS4/CB4
Impedance (milliohms)
1000 10000
400/500
Impedance (milliohms)
1000
1000
1KHz
10KHz
100KHz Frequency
1MHz
10MHz
1KHz
10KHz
100KHz Frequency
1MHz
10MHz
1KHz
10KHz
100KHz Frequency
1MHz
10MHz
TYPICAL FREQUENCY
10000
CS4/CB4
10000
400/500
10000
(milliohms)
(milliohms)
(milliohms)
1000
1000
1000
100Hz
1KHz
10KHz Frequency
100KHz
1MHz
100Hz
1KHz
10KHz Frequency
100KHz
1MHz
100Hz
1KHz
10KHz Frequency
100KHz
1MHz
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Capacitor Type
NENGS
free machined terminations Multilayer metallized polymer surface mount chips
Chip sizes Reflow solderable Made U.S.A.
ST2824/ST3827 CHIP STYLE
SURFILM
Capacitance Part Number Code 105K100ST2824 1.00 225K100ST3827 2.20
Case Code ST2824 ST3827
Case 0.280 .305 0.380 .405
Dimensions (inch) Tmax. Wmax. 0.175 0.256 0.200 0.286
ST3/ST4 LEAD FRAME STYLE
Lead Frame Pins Thickness 0.010" ±0.005" Width 0.020" ±0.005" Pitch 0.100" ±0.015" Height 0.025" ±0.015" Pins 0.025" 0.015"
0.025" 0.015"
Part Number 105K100ST3 205K100ST4 225K100ST4
Capacitance Code 1.00 2.00 2.20
Case Case Dimensions Code Tmax. 0.280 .310 0.175 0.380 .410 0.200 0.380 .410 0.200
(inch) Wmax. 0.256 0.310 0.020 0.250 0.410 0.020 0.286 0.410 0.020
Recommended Sizes (inches)
Case Code ST2824/ST3 0.210 0.310 0.365 0.465 0.275 0.305
ST3827/ST4
PAGE Paktron P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 Phone 434-239-6941 434-239-4730 www.paktron.com
ORDER
CODE
TOLERANCE
VOLTAGE 100VDC
ST2824 CASE CODE ST2824 ST3827
PACKAGING Tape/Reel
Surfilm® Capacitors Type Performance Characteristics
Electrical
Capacitance Range Voltage Range Tolerance Dissipation Factor Insulation Resistance 1.0, @1KHz ±10% 1.0% 1KHz MegOhms fds, measured after minute electrification Rated Voltage +6.0% from -55°C 85°C (typical) 0.30% (typical) 6.0nH (typical) ST2824/ST3 9.0nH (typical) ST3827/ST4 Humidity Test conditions Temperature Applied Voltage Polyethylene Terephthalate Aluminum Metallization Interleaf® Technology, noninductive, extended foil, parallel plate, multilayer film Humidity Test Duration 75°C Zero voltage hours delta 7.0% 1.00%
Performance Testing
Accelerated DryLIfe: Test Conditions Temperature Applied Voltage Test Duration 85°C ±5°C 1.25 Rated Voltage
Ohms
Impedance Frequency
ST2824/ST3 100VDC (Typical)
10,000.000 1000.000 100.000 10.000 1.000 0.100 0.010 0.001 Impedance 1,000 10,000 100,000 Frequency (Hz) 1,000,000 10,000,000
1000 hours delta 5.0% 1.00%
Performace Requirements Capacitance Dissipation Factor
Dielectric Strength Temperature Coef. Dielectric Absorption Self Inductance
Insulation Resistance specification
Impedance Frequency
ST3827/ST4 100VDC (Typical)
1000.000 100.000 10.000 Ohms 1.000 0.100 0.010 0.001 Impedance 1,000 10,000 100,000 1,000,000 10,000,000 Frequency (Hz)
Physical
Dielectric Material Electrode Material Winding Construction
Performance Requirements Capacitance Dissipation Factor
Terminations ST2824/ST3827 Chip Style Tin-based solderable surface Lead Frame Style Alloy Lead Frame, lead configuration butt joint mounting Self-encased ITW, Capacitance Code, tolerance rated voltage -55°C 85°C, 125°C with voltage derating Tape/Reel. packed with dessicant moisture barrier bag. JEDEC level package.
Insulation Resistance specification Solderability (Convection Reflow): Test Conditions Solder Temperature Test Duration 220°C +0°C, -10°C
Amps
Maximum Current
ST2824/ST3 ST3827/ST4 (Typical)
10,000
ST3/ST4
seconds delta 5.0%
Enclosure Container Marking Temperature Range Packaging
Performance Requirements Capacitance
Terminal Adhesion: through hole substrate, centered. Solder fillets seconds with damage.
100,000 Frequency (Hz)
1,000,000
Convection Reflow Profile (Typical)
Temperature (°C)
Quantity reel
ST2824 ST3827
1200
Capacitance Drift: 2.0% over years temperature between 35°C between 65%.
Solder Attachment
Conductive Reflow Convection Rreflow Reflow Soldering Iron (220°C) Wave Solder Soldering Guidelines Spec. details.
Temperature (°C)
Time (Seconds)
Reflow Profile (Typical)
Zones
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Suppressor Snubber Network
Relay contact protection Noise reduction controllers/drivers
Q/QRL
UL/CSA version
dv/dt suppression thyristor triacs EMI/RFI reduction time suppression Available voltages: Type UL/CSA version
Max.
PAKTRON QUENCHARC®
Max.
Quencharc® Suppressor Snubber Network
PAKTRON QUENCHARC®
Max. .25" Max. .850" Min.
"ARCING," "SPARKING," "TRANSIENTS" often cause premature failures relays, switches, thyristors, triacs, contactors, related products. Paktron QUENCHARCS® extend operating life when properly selected applied.
Typ.
CODE
VOLTAGE
TYPE
OHMS ±10%
WATT
QUENCHARC
VDC/250
,47, 100, 150, 220, 100, 100, 100,
1.04 1.00
1.08 1.60 2.18 1.45 1.45 1.08 1.45
1.29 1.80 1.20 1.20 1.20
1200 VDC/480VAC 1600 VDC/660VAC VDC/250 VDC/250 VDC/125 VDC/125
UL/CSA Recognized Across-the-Line Application NOTE: Type complies with UL1414/CSA-C22.2
150,
1.08
Preferred values available from stock shown bold type.
VOLTAGE WAVEFORM
UNSUPPRESSED 100V/div .1ms/div SUPPRESSED 100V/div .5ms/div
CURRENT WAVEFORM
UNSUPPRESSED 100V/div .1ms/div SUPPRESSED 100V/div .1ms/div
ORDER
EXAMPLE: Ohms CODE TOLERANCE VOLTAGE VDC/125 VDC/250 1200 VDC/480 1600 VDC/660
TYPE
RESISTOR
EXAMPLE: Ohms CODE TOLERANCE VOLTAGE
TYPE
RESISTOR
Type QRL: Recognized across-the-line. File E33628. Certified across-the-line. File LR32208.
PAGE Paktron P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 Phone 434-239-6941 434-239-4730 www.paktron.com
QUENCHARC® WORKS
most popular commonly used method suppression connect resistor-capacitor network shown Figures preferred method connection across contacts wants protect. However, network hooked across load, shown dashed line, when inductance load circuit considered lumped together.
OPERATING
rate voltage change, which important transient suppression triac switching, Equation tells that knowing circuit conditions with given values coil resistance that limit current prior contact opening, rate voltage rise inversely proportional capacitance. other words, larger capacitance, greater transient suppression. However, when contact closes, additional energy stored capacitor discharged through contact. Hence, compromise made selection both resistance capacitance. effort provide simple answer designers' requests proper values resistance capacitance, some relay manufacturers came with empirical formulas nomographs. instance, C.C. Bates1 gives equations
TEMPERATURE RANGE -55°C +85°C full rated voltage. DISSIPATION FACTOR nominal dissipation factor determined from following equation: 2fCR .006 where: test frequency hertz nominal capacitance value farads nominal value series resistor ohms. DIELECTRIC WITHSTANDING VOLTAGE Unit shall withstand potential times voltage rating. Testing conducted 25°C. LIFE TEST Unit shall withstand test potential 125% rated voltage period hours temperature 85°C. failure shall consist Capacitance change greater than Dissipation factor greater than original limits. LONG TERM STABILITY capacitance shall change more than when stored ambient temperature humidity period years less.
Figure
Figure
When contacts open, voltage across uncharged capacitor zero transient voltage starts charging capacitor. meantime, contact steadily widened, time capacitor charged full potential, contact widened well beyond minimum breakdown potential air, thus preventing arcing. When contact closes, inrush current from capacitor damage contact, here resistance needed limit maximum current Eo/Rc during contact closure. induced voltage opening contact and, seen, larger value series resistor, higher induced voltage. other hand, lower series resistance makes current contact closure higher. time dependence voltage given
V(t) +RC)i
where capacitance load current amperes prior contact opening resistance ohms series with capacitor source voltage choice resistance capacitance value however, quite flexible. fact, choice simple that does need nomograph all. Besides, nomograph published certain relay manufacturer particular relays firm manufactures, necessarily universal. 1Bates, C.C., "Contact Protection Electromagnetic Relays." Electro-mechanical Design, August, 1966. contact protection all. spot arcing, connect ohm, VAC, QC100 (our most widely used Quencharc®), across contacts, observe levels suppression, voltage break current make. suppressed voltage should below 250V, which provides volts safety margin from breakdown potential air. voltage still above 250V, ohms ohms range. need higher capacitance than better with Zener varistor terms cost space. most relays triacs ohms provides satisfactory suppression. When protecting contacts circuits, same general guidelines circuits used, wattage resistor must considered current flow sustained long enough period time heat component. Compute impedance unit obtain current value, then time considerations determine whether standard network resistor adequate.
PHYSICAL
TOLERANCE Capacitor 20%, Resistor 10%. CONSTRUCTION* Metallized polyester capacitor series with carbon composition resistor. CASE Coated with UL94V-0 flame retardant epoxy. WIRE LEADS (.032") capacitor end. (.040") styles. Resistor .025" 0.045". MARKING ITW, Quencharc®, capacitance, resistance, voltage. resistors power wire-wound
CHOOSING QUENCHARC®
choosing Quencharc®, first all, check maximum switching current rating contacts protected. This value differs different types contact materials different types relays. maximum current during contact closure with network Eo/Rc, where source voltage resistance value network. quantity Eo/Rc must lower than maximum switching current obvious reasons. Next, selection capacitance best done with oscilloscope. Connect oscilloscope probe relay wiper ground other plate contact. Without network across contacts, check amplitude transient voltage contact break amplitude current contact make. voltage less than 300V current less than maximum switching current rating relay, don't arcing, need
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SOLDERING GUIDELINES Capstick Surfilm Capacitors
General Capstick Surfilm capacitors Type film dielectric have been thermally stabilized withstand reflow soldering temperatures maximum 220°C seconds, with minutes allowable time temperatures above 183°C. Dielectric Film Name polyethylene terephthalate polyethylene terephthalate polyethylene terephthalate
Type
Solder Paste Thickness Depending upon geometry, recommended solder paste thickness .006" mils) .010" mils). optimum performance, mils mils should used. case where small pitch components allow extra paste thickness, "step screen" should considered. Board Attachment their mass, recommended that optimum soldering results, Surfilm capacitors spot glued substrate. Maximum Solder Reflow Temperatures exceed following temperatures: Manufacturing Solder Method Conductive Reflow Convection Reflow Reflow Vapor Phase Reflow Soldering Iron Wave Solder Wave Solder (Thru-Hole) Maximum Temperature 220°C 220°C 220°C 220°C 220°C 220°C 220°C 220°C 220°C N.A. N.A. 220°C 220°C 220°C 220°C N.A. N.A. N.A. 250°C 250°C N.A.
Type
Code
prevent excessive changes both electrical mechanical characteristics, Paktron recommends that following soldering guidelines observed when processing Capstick Surfilm capacitors. Pre-Conditioning case high humidity storage short cycle reflow soldering profiles, recommended that capacitors pre-conditioned 85°C oven minimum hours prior reflow soldering minimize effects caused rapid vaporization moisture.
CAUTION
This contains
Convection Reflow Profile (Typical)
MOISTURE-SENSITIVE DEVICES
Shelf life this sealed bag: months <40°C <90%RH. After this opened, devices that will subjected infrared reflow, convection reflow equivalent processing (peak package body temperature 220°C) must Mounted within hours factory conditions =<30°C Stored =<20% Devices require baking, before mounting, met, applicable, Humidity Indicator Card reads >20% 23°C ±5°C. required, devices baked for: hours 60°C +5°C/-0°C reels hours 85°C +0°C/-5°C bulk. Seal Date: blank, code label) Paktron 1205 McConville Road Lynchburg, 24502
Temperature (°C)
Reflow Profile (Typical)
Layout
Typical Recommended Capstick
Left
0.110" 0.040" 0.100" 0.365"
Temperature (°C)
Mounting Layout
Surfilm
Right
0.110"
Right Left Note: left side capacitor leads joined common internal capacitor right side capacitor leads also joined common internal capacitor. Recommended Sizes (inches) Case Code ST2824 ST3827 0.210 0.310 0.365 0.465 0.275 0.305
Board Cleaning When cleaning boards, avoid alcohol based solvents. These cause temporary drop insulation resistance capacitor. manufacturer's safety data sheet should also studied carefully before using solvent.
SOLDERING GUIDELINES Capstick Surfilm Capacitors
Hand Soldering Surfilm Capacitors following hand soldering method proven satisfactory soldering small quantities Surfilm capacitors printed circuit pads. Materials Equipment: soldering iron that will control iron temperature 220°C maximum. Weller 2002C Soldering station EC1201P Iron will provide temperature control needed reduce heat exposure time, temperature solder alloy with residue solder flux. 0.030" diameter X32B cored solder with alloy Tin, Lead, Bismuth soldering range 143°C 163°C (289°F 325°F. ease handling, prevention contamination personal injury, pair small tweezers should employed position units hand soldering. Procedure: Flow thin bead solder printed circuit pattern. Center capacitor soldered printed circuit electrode place small quantity solder iron tip. Place iron point junction capacitor electrode printed circuit electrode reflow solder while applying force surface capacitor that will seat flush against printed circuit pattern. Clean iron apply solder opposite printed circuit capacitor electrode junction until solder wets full length electrode capacitor electrode. apply force capacitor when soldering second electrode. Examine first side soldered repeat step first side required. first solder application step mechanically position capacitor board hold place that both hands free apply both solder iron second electrode. full solder wetting accomplished step
Type
Important Points Soldering Reflow Temperature: maximum reflow solder temperature capacitors made with based film dielectric specified 220°C. Type made with shrinkage dielectric film that been thermally stabilized withstand reflow soldering temperatures maximum 220°C seconds, with minutes allowable time temperatures above 183°C. Typical reflow temperature profiles shown proceeding page. Exceeding recommended maximum temperature leading causes soldering problems. Type Product, excessive reflow temperatures cause product swelling shrinkage/curling white coverplates, which lift terminations solder paste create "drawbridge" condition that prevents complete soldering. Solder Paste Thickness: While reliable solder joints have been formed using paste thicknesses mils, optimum performance, mils mils should used. Mounting Sizes: recommended size geometry shown proceeding page. Board Attachment: mass Type product, recommended that chips spot glued substrate optimum soldering results. Storage Conditions Floor Life: Capstick Surfilm component reel packaging from factory "dry pack". packing involves sealing reel product with desiccant inside moisture-barrier bag. This type packaging provides moisture protection months <40°C <90% Floor Life "out-of-bag" exposure time categorized according "JEDEC Moisture-Sensitivity Level" specification. Capstick Surfilm products meet "Level which allows "out-of-bag" exposure time 30°C days hours). case open exposure high humidity storage, recommended that capacitors pre-conditioned prior reflow soldering minimize effects caused rapid vaporization moisture. capacitors pre-conditioned either while still reels 60°C) bulk/loose 85°C) hours
TECH BULLETINS
Click below view Technical Bulletin
Technical Bulletin
Multilayer Polymer (MLP) Capacitors Provide Stable over Wide Temperature Voltage Ranges
Technical Bulletin 5/95
Optimizing Output Filters Using Multilayer Polymer Capacitors High Power Density Voltage Converters
Technical Bulletin 3/96
Using Plastic Film Chip Capacitors Reflow Soldering Systems
Technical Bulletin 9/96
Film Chip Capacitors Save Space High Frequency Power Trains
Technical Bulletin 3/98
Evaluation Polymer Film Capacitors Using Newly Developed, Shrinkage
Technical Bulletin 3/99
Board Flexure Comparison between Surface Mount Multi-Layer Ceramic Film Capacitors
Technical Bulletin 3/99A
Recent Advances Capacitor Technology with Application High Frequency Power Electronics Voltage Conversion
Technical Bulletin 3/01
Requirement Robust Capacitors High Density Power Converters
AVAILABLE THROUGH THESE DISTRIBUTORS: Atlantic Components: Cornell-Dubilier/Mallory: Future Electronics: Gopher Electronics: 1-800-433-6600 1-317-275-2285 1-800-388-8731 1-800-592-9519
Visit page distribution locations: www.paktron.com
ILLINOIS TOOL WORKS Illinois Tool Works Inc. (ITW) multinational Fortune company based Glenview, with more than $9.3 billion annual revenues over 53,000 employees worldwide. Through more than decentralized operating units countries, engineers manufactures value-added fasteners, components, assemblies systems customers around world. ITW's many businesses around world focused serving their customers' industries' diverse requirements. Despite variety markets served, underlying goals that drive businesses common: create value improve operating efficiencies every customer.
P.O. 4539, 1205 McConville Road, Lynchburg, Virginia 24502 TEL: 434-239-6941 FAX: 434-239-4730 SITE: http://www.paktron.com EMAIL: itwpaktron@paktron.com
1/03, Paktron
Important Notice Purchasers Users statements, technical information recommendations based tests believe reliable, their accuracy completeness guaranteed. Buyer shall determine suitability product intended Buyer User assume risk liability every kind. other statement recommendation shall binding have force unless separate written agreement signed officers Seller Manufacturer. orders with special arrangements reserve right over-or short supply quantity ordered.
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