E‘ectromc Components KEII/IEI' CHARGED?
1© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
One world. One KEMET
Benefits
Surface mount form factor
• Operatingambienttemperatureof−40°Cto+85°C
Operating voltage range of 85 – 385 VDC
Operating voltage (Vrms) of 60 – 300 V
Available case sizes: 3225 and 4032
Dimensional and weight savings on the board
• Non-flammablethermoplasticencapsulationaccordingto
the standard UL 94 V–0
RoHS 2 2011/65/EC, REACH compliant
Overview
KEMET's VP series of low and medium voltage plastic-
encapsulated varistors are designed to protect electronic
equipment against high voltage surges in the low and
medium voltage region. They offer direct surface mount
equivalents to leaded disc varistors of 5 and 7 mm sizes.
Thethermoplasticencapsulationisnon-flammable
according to the standard UL 94 V–0. Contacts are made of
tinned copper sheet.
These transient voltage suppressors cover an operating
voltage Vrms from 60 V to 300 V, featuring maximum surge
currents from 400 – 1,200 A.
Applications
Typical applications include medical instruments, integrated
circuits and transistors, mobile communication, white
goods, entertainment electronics, lighting ballast, as well
as protection of low and medium voltage boards, remote
control and electrical counters and applications that are
exposed to humidity.
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Click image above for interactive 3D content
Open PDF in Adobe Reader for full functionality
ammmc compmm crummy: #L
2© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Ordering Information
VP 3225 K101 R011
Series Chip
Size Code Tolerances Rated Peak Single Pulse
Transient Current (A)
Packaging/
Termination
Maximum Continuous
Working Voltage
(Vrms AC)
Varistor
SMD85°C
Plastic
Encapsulated
3225 = 3225
4032 = 4032
K = 10% 401 = 400
122 = 1,200
(First two digits represent
significantfigures.Thirddigit
specifiesnumberofzeros.)
R = Reel 330 mm 060 = 60
075 = 75
095 = 95
115 = 115
130 = 130
140 = 140
150 = 150
175 = 175
230 = 230
250 = 250
275 = 275
300 = 300
Dimensions – Millimeters
t
WL
1.5±0.3 3.0±0.3
h
Size
Code
Voltage range
V
L ±0.5
mm
W ±0.4
mm
h ±0.3
mm
t ±0.3
mm
3225
11 – 150
8.0
6.3
1.7
3.4
3225
175 – 300
8.0
6.3
2.3
4.7
4032
11 – 300
10.0
8.0
2.3
4.7
ammmc compmm KEIVIEI' crummy: \fiwfl mA)\<15% nowsib‘e="" damage="" \fiwfl=""><15% nowsib‘e="" damage="">
3© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Environmental Compliance
RoHS 2 2011/65/EC, REACH
Performance Characteristics
Continuous Units Value
Steady State Applied Voltage
DC Voltage Range (Vdc) V 85 – 385
AC Voltage Range (Vrms) V 60 – 300
Transient
Non-Repetitive Surge Current, 8/20 µs Waveform (Imax) A 400 – 1,200
Non-Repetitive Surge Energy, 10/1,000 µs Waveform (Wmax) J 3 – 30
Operating Ambient Temperature °C −40to+85
Storage Temperature Range (mounted components) °C −40to+125
ThresholdVoltageTemperatureCoefficient %/°C <+0.05
Response Time ns < 5
Climatic Category 40/85/56
Qualifications
Reliability Parameter Test Tested According to Condition to be Satisfied
after Testing
AC/DC Bias Reliability AC/DC Life Test CECC 42200, Test 4.20 or IEC 10511, Test 4.20.
AEC–Q200 Test 8 – 1,000 hours at UCT Vn (1 mA)| < 10%
Pulse Current Capability Imax 8/20 µs
CECC 42200, Test C 2.1 or IEC 10511, Test 4.5.
10 pulses in the same direction at 2 pulses per minute
at maximum peak current for 10 pulses
Vn (1 mA)| < 10%
no visible damage
Pulse Energy Capability Wmax 10/1,000 µs
CECC 42200, Test C 2.1 or IEC 10511, Test 4.5. 10
pulses in the same direction at 1 pulses every 2
minutes at maximum peak current for 10 pulses
Vn (1 mA)| < 10%
no visible damage
WLD Capability WLD x 10 ISO 7637, Test pulse 5, 10 pulses at rate 1 per minute
Vn
(1 mA)| < 15%
no visible damage
Vjump Capability Vjump 5 minutes IncreaseofsupplyvoltagetoV≥Vjump for 1 minute
Vn
(1 mA)| < 15%
no visible damage
ammmc compmm KEIVIEI' crummy:
4© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Qualifications cont'd
Reliability Parameter Test Tested According to Condition to be Satisfied
after Testing
Environmental and
Storage Reliability
Climatic Sequence
CECC 42200, Test 4.16 or IEC 10511, Test 4.17.
a) Dry heat, 16 hours, UCT, Test Ba, IEC 68–2–2
b)Dampheat,cyclic,thefirstcycle:5C,93%RH,
24 hours, Test Db 68–2–4
c) Cold, LCT, 2 hours Test Aa IEC 68–2–1
d)Dampheatcyclic,remaining5cycles:55°C,93%
RH, 24 hour/cycle, Test Bd, IEC 68–2–30
Vn (1 mA)| < 10%
Thermal Shock CECC 42200, Test 4.12, Test Na, IEC 68–214,
AEC–Q200 Test 16, 5 cycles UCT/LCT, 30 minutes
Vn (1 mA)| < 10%
no visible damage
Steady State Damp Heat
CECC 42200, Test 4.17, Test Ca, IEC 68–2–3,
AEC–Q200Test6,56days,40°C,93%RH.
AEC–Q200 Test 7: Bias, RH, T all at 85.
Vn (1 mA)| < 10%
Storage Test IEC 68–2–2, Test Ba, AEC–Q200 Test 3,
1,000 hours at maximum storage temperature
Vn (1 mA)| < 5%
Mechanical Reliability
Solderability
CECC 42200, Test 4.10.1, Test Ta IEC 68–2–20
solderbathandreflowmethod
Solderable at shipment
and after 1 year of storage,
criteria > 95% must be
coveredbysolderforreflow
meniscus
Resistance to Soldering
Heat
CECC 42200, Test 4.10.2, Test Tb, IEC 68–2–20 solder
bathandreflowmethod
Vn (1 mA)| < 5%
Terminal Strength JIS–C–6429, App. 1, 18 N for 60 seconds – same for
AEC–Q200 Test 22 no visual damage
Board Flex JIS–C–6429, App. 2, 2 mm minimum
AEC–Q200test21–Boardflex:2mmflexminimum
Vn (1 mA)| < 2%
no visible damage
Vibration
CECC 42200, Test 4.15, Test Fc, IEC 68–2–6,
AEC–Q200 Test 14.
Frequency range 10 – 55 Hz (AEC: 10 – 2,000 Hz)
Amplitude 0.75 m/s2 or 98 m/s2
(AEC: 5 G for 20 minutes)
Total duration 6 hours (3 x 2 hours)
(AEC: 12 cycles each of 3 directions)
Waveshape – half sine
Vn (1 mA)| < 10%
no visible damage
Mechanical Shock
CECC 42200, Test 4.14, Test Ea, IEC 68–2–27,
AEC–Q200 Test 13.
Acceleration = 490 m/s2
(AEC: MIL-STD–202–Method 213),
Pulse duration = 11 ms,
Waveshape – half sine; Number of shocks = 3 x 6
Vn (1 mA)| < 10%
no visible damage
Electrical Transient
Conduction ISO–7637–1 Pulses AEC–Q200 Test 30: Test pulses 1 to 3.
Also other pulses – freestyle.
Vn (1 mA)| < 10%
no visible damage
ammmc compmm KEIl/IEI' crummy:
5© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Table 1 – Ratings & Part Number Reference
KEMET Part
Number
h ±0.3
(mm)
L ±0.5
(mm)
W ±0.4
(mm)
t ±0.3
(mm) Vrms VDC Vn
1 mA VcIc
Wmax
10/1,000 µs
(J)
Pmax
(W)
Imax
8/20 µs
(A)
Ctyp
at 1 kHz
(pF)
VP3225K401R060 1.7 8.0 6.3 3.4 60 85 100 165 53.0 0.1 400 330
VP4032K122R060 2.3 10.0 8.0 4.7 60 85 100 165 10 7.0 0.25 1,200 680
VP3225K401R075 1.7 8.0 6.3 3.4 75 100 120 200 54.0 0.1 400 270
VP4032K122R075 2.3 10.0 8.0 4.7 75 100 120 200 10 9.0 0.25 1,200 550
VP3225K401R095 1.7 8.0 6.3 3.4 95 125 150 250 56.0 0.1 400 220
VP4032K122R095 2.3 10.0 8.0 4.7 95 125 150 250 10 11.0 0.25 1,200 440
VP3225K401R115 1.7 8.0 6.3 3.4 115 150 180 300 56.5 0.1 400 180
VP4032K122R115 2.3 10.0 8.0 4.7 115 150 180 300 10 13.0 0.25 1,200 360
VP3225K401R130 1.7 8.0 6.3 3.4 130 170 205 340 57.0 0.1 400 160
VP4032K122R130 2.3 10.0 8.0 4.7 130 170 205 340 10 15.0 0.25 1,200 320
VP3225K401R140 1.7 8.0 6.3 3.4 140 180 220 360 57.5 0.1 400 150
VP4032K122R140 2.3 10.0 8.0 4.7 140 180 220 360 10 18.0 0.25 1,200 300
VP3225K401R150 1.7 8.0 6.3 3.4 150 200 240 395 59.0 0.1 400 140
VP4032K122R150 2.3 10.0 8.0 4.7 150 200 240 395 10 18.5 0.25 1,200 280
VP3225K401R175 1.7 8.0 6.3 4.7 175 225 270 455 59.5 0.1 400 120
VP4032K122R175 2.3 10.0 8.0 4.7 175 225 270 455 10 21.0 0.25 1,200 250
VP3225K401R230 1.7 8.0 6.3 4.7 230 300 360 595 510.0 0.1 400 95
VP4032K122R230 2.3 10.0 8.0 4.7 230 300 360 595 10 23.0 0.25 1,200 190
VP3225K401R250 1.7 8.0 6.3 4.7 250 320 390 650 511.0 0.1 400 80
VP4032K122R250 2.3 10.0 8.0 4.7 250 320 390 650 10 25.0 0.25 1,200 180
VP3225K401R275 1.7 8.0 6.3 4.7 275 350 430 710 513.0 0.1 400 75
VP4032K122R275 2.3 10.0 8.0 4.7 275 350 430 710 10 29.0 0.25 1,200 160
VP3225K401R300 1.7 8.0 6.3 4.7 300 385 470 775 515.0 0.1 400 70
VP4032K122R300 2.3 10.0 8.0 4.7 300 385 470 775 10 30.0 0.25 1,200 150
KEMET Part
Number
h ±0.3
mm
L ±0.5
mm
W ±0.4
mm
t ±0.3
mm
Vrms
V
Vdc
V
Vn 1 mA
V
Vc
V
Ic
A
Wmax 10/1,000 µs
J
P max
W
Imax 8/20 µs
A
Ctyp @ 1 kHz
pF
Emctmmc Compancnl: KEIVIEI' CHARGED! fllzilsll ruxu—mmmfihM-M
6© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Soldering
PopularsolderingtechniquesusedforsurfacemountedcomponentsareWaveandInfraredReflowprocesses.Bothprocessescanbe
performed with Pb-containing or Pb-free solders. The termination option available for these soldering techniques is Barrier Type End
Terminations.
End Termination Designation Recommended and
Suitable for
Component RoHS
Compliant
Ni Sn Barrier Type End
Termination
Ni R1 Pb-containing and
Pb-free soldering
Yes
Wave Soldering – this process is generally associated with discrete components mounted on the underside of printed circuit boards, or
for large top-side components with bottom-side mounting tabs to be attached, such as the frames of transformers, relays, connectors,
etc.SMDvaristorstobewavesolderedarefirstgluedtothecircuitboard,usuallywithanepoxyadhesive.Whenallcomponentsonthe
PCB have been positioned and an appropriate time is allowed for adhesive curing, the completed assembly is then placed on a conveyor
and run through a single, double wave process.
Infrared Reflow Soldering–thesereflowprocessesaretypicallyassociatedwithtop-sidecomponentplacement.Thistechniqueutilizes
amixtureofadhesiveandsoldercompounds(andsometimesfluxes)thatareblendedintoapaste.ThepasteisthenscreenedontoPCB
solderingpadsspecificallydesignedtoacceptaparticularsizedSMDcomponent.Therecommendedsolderpastewetlayerthickness
is100to300µm.OncethecircuitboardisfullypopulatedwithMDcomponents,itisplacedinareflowenvironment,wherethepasteis
heatedtoslightlyaboveitseutectictemperature.Whenthesolderpastereflows,theSMDcomponentsareattachedtothesolderpads.
Solder Fluxes–solderfluxesaregenerallyappliedtopopulatedcircuitboardstocleanoxidesformingduringtheheatingprocessandto
facilitatetheflowingofthesolder.Solderfluxescanbeeitherapartofthesolderpastecompoundorcanbeseparatematerials,usually
fluids.Recommendedfluxesare:
 •Non-activated(R)fluxes,wheneverpossible
 •Mildlyactivated(RMA)fluxesofclassL3CN
• Class ORLO
Activated (RA),watersolubleorstrongacidicfluxeswithachlorinecontent>0.2wt.%areNOTRECOMMENDED.Theuseofsuchfluxes
could create high leakage current paths along the body of the varistor components.
Whenafluxisappliedpriortowavesoldering,itisimportanttocompletelydryanyresidualfluxsolventspriortothesolderingprocess.
Thermal Shock – to avoid the possibility of generating stresses in the varistor chip due to thermal shock, a preheat stage to within
100°Cofthepeaksolderingprocesstemperatureisrecommended.Additionally,SMDvaristorsshouldnotbesubjectedtoatemperature
gradientgreaterthan4°C/second,withanidealgradientbeing2°C/second.Peaktemperaturesshouldbecontrolled.WaveandReflow
solderingconditionsforSMDvaristorswithPb-containingsoldersareshowninFig.1and2respectively,whileWaveandReflowsoldering
conditions for SMD varistors with Pb-free solders are shown in Figures 1 and 3
Emctmmc Compancnl: KEIVIEI' CHARGED!
7© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Soldering cont'd
WheneverseveraldifferenttypesofSMDcomponentsarebeingsoldered,eachhavingaspecificsolderingprofile,thesolderingprofile
with the least heat and the minimum amount of heating time is recommended. Once soldering has been completed, it is necessary to
minimizethepossibilityofthermalshockbyallowingthehotPCBtocooltolessthan50°Cbeforecleaning.
Inspection Criteria–theinspectioncriteriatodetermineacceptablesolderjoints,whenWaveorInfraredReflowprocessesareused,will
dependonseveralkeyvariables,principallyterminationmaterialprocessprofiles.
Pb-contining Wave and IR Reflow Soldering – typical “before” and “after” soldering results for Barrier Type End Terminations can be seen
in Fig. 4. Barrier type terminated varistors form a reliable electrical contact and metallurgical bond between the end terminations and the
solder pads. The bond between these two metallic surfaces is exceptionally strong and has been tested by both vertical pull and lateral
(horizontal) push tests. The results exceed established industry standards for adhesion.
The solder joint appearance of a barrier type terminated varistor shows that solder forms a metallurgical junction with the thin tin-alloy
(over the barrier layer), and due to its small volume “climbs” the outer surface of the terminations, the meniscus will be slightly lower.
This optical appearance should be taken into consideration when programming visual inspection of the PCB after soldering.
Ni Sn Barrier Type End Terminations
Figure4:SolderingCriterionincaseofWaveandIRReflowPb-containingSoldering
Pb-free Wave and IR Reflow Soldering – typical “before” and “after” soldering results for Barrier Type End Terminations are given
in a phenomenon knows as “mirror” or “negative” meniscus. Solder forms a metallurgical junction with the entire volume of the end
termination, i.e. it diffuses from pad to end termination across the inner side, forming a “mirror” or “negative” meniscus. The height of the
solder penetration can be clearly seen on the end termination and is always 30% higher than the chip height.
ammmc compmm KEIl/IEI' crummy:
8© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Soldering cont'd
Solder Test and Retained Samples–reflowsolderingtestbasedonJ-STD-020D.1andsolderingtestbydippingbasedonIEC60068-
2 for Pb-free solders are preformed on each production lot as shown in the following chart. Test results and accompanying samples
areretainedforaminimumoftwo(2)years.Thesolderabilityofaspecificlotcanbecheckedatanytimewithinthisperiodshoulda
customer require this information.
Test Resistance to Flux Solderability
Static leaching
(Simulation of Reflow
Soldering)
Dynamic Leaching
(Simulation of Wave
Soldering)
Parameter
Soldering method Dipping Dipping Dipping Dipping with agitation
Flux L3CN, ORL0 L3CN, ORL0, R L3CN, ORL0, R L3CN, ORL0, R
Pb Solder 62 Sn/36 Pb/2 Ag
PbSolderingtemperature(°C) 235±5 235±5 260±5 235±5
Pb-FREE Solder Sn96/Cu0,4–0,8/3–4Ag
Pb-FREE Soldering
Temperature(°C)
250±5 250±5 280±5 250±5
Soldering Time (s) 2210 10 > 15
Burn-in Conditions VDC
max
, 48 h
Acceptance Criterion dVn < 5%, idc must stay
unchanged
> 95% of end termination
must be covered by solder
> 95% of end termination
must be intact and covered
by solder
> 95% of end termination
must be intact and covered
by solder
Rework Criteria Soldering Iron – unless absolutely necessary, the use of soldering irons is NOT recommended for reworking varistor
chips. If no other means of rework is available, the following criteria must be strictly followed:
• Do not allow the tip of the iron to directly contact the top of the chip
•Donotexceedthefollowingsolderingironspecifications:
Output Power: 30 Watts maximum
 TemperatureofSolderingIronTip: 280°Cmaximum
Soldering Time: 10 Seconds maximum
Storage Conditions – SMD varistors should be used within 1 year of shipment from factory to avoid possible soldering problems caused
by oxidized terminals. The storage environment should be controlled, with humidity less than 40% and temperature between -25 and 45
°C.Varistorchipsshouldalwaysbestoredintheiroriginalpackagedunit.
ccccccccccccccccccccc crummy: 4L +—»1
9© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Soldering Pad Configuration
t
WL
1.5±0.3 3.0±0.3
h
B C B
A
D
A
Size
Voltage
range
V
L ±0.5
mm
W ±0.4
mm
h ±0.3
mm
t ±0.3
mm
A
(mm)
B
(mm)
C
(mm)
D
(mm)
3225 11 – 150 8.0 6.3 1.7 3.4 3.5 2.9 4.5 10.3
3225 175 – 300 8.0 6.3 2.3 4.7 3.5 2.9 4.5 10.3
4032 11 – 300 10.0 8.0 2.3 4.7 3.5 2.9 6.5 12.3
Packaging
Voltage
Range (V)
Chip Size
Reel Size
< 175 1,500 1,000
E‘Icunmc Companm; KEIVIEI' CHARGED! Current Equal or Greater than 50 V t naiion
10© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Construction
Current Below 50 V
Detailed Cross Section
Molded Epoxy
Case
Molded Epoxy
Case
Ag Electrode
Ag Electrode
ZnO Layer Glass Passivation
Termination
(Ag/Pd, Ni/Sn)
Termination
(Ag/Pd, Ni/Sn)
Current Equal or Greater than 50 V
Molded Epoxy
Case
Molded Epoxy
Case
Glass Passivation
Termination
(Ag/Pd, Ni/Sn)
.................... CHARGED!
11© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Marking
Tradename
Series Name
Model Size
Vn Tolerance
Vrms
Emctmmc Compancnl: KEIl/IEI' EHARGED!
12© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Taping & Reel Specifications
Tape Size (mm) 16 mm
3225
4032
A0
7.8
10.8
B0
3.7
3.7
K0 Maximum
12.1
12.1
B1 Maximum
1.5
1.5
D1 Minimum
14.25
14.25
E2 Minimum
12.0
12.0
P1
7.5
7.5
F
16.0
16.0
W
9.5
9.5
T2 Maximum
16.4+2
16.4+2
W1
12.4+2
12.4+2
W2 Maximum
22.4
22.4
W3
15.9 – 9.4
15.9 – 19.4
A
330
330
Electronic Componcnls KEIl/IEI' moms): Rated DC Maximum continuous DC voltage (< 5%="" ripple)="" which="" may="" he="" applied="" to="" the="" component="" under="" voltage="" continuous="" operating="" conditions="" at="" 25°c="" the="" current="" passing="" through="" the="" varistor="" at="" vdc="" and="" at="" 25’c="" or="" at="" any="" other="" specified="" temperature="" clamping="" voltage="" the="" peak="" voltage="" developed="" across="" the="" varistor="" under="" standard="" atmospheric="" conditions,="" when="" protection="" level="" passing="" an="" 5/20="" us="" class="" current="" pulse="" a="" peak="" value="" oi="" current="" which="" is="" 1/10="" of="" the="" maximum="" peak="" current="" for="" 100="" pulses="" at="" two="" per="" minute="" ior="" the="" 8/20="" us="" pulse="" voltage="" ampin="" ratio="" thejump="" start="" transient="" resulting="" irom="" the="" temporary="" application="" oi="" an="" overvoltage="" in="" excess="" y="" voltage,="" the="" circuit="" power="" supply="" may="" be="" subject="" due="" to="" the="" voltage="" regulation="" iailing="" or="" it="" may="" he="" d="" when="" it="" becomes="" necessary="" to="" boost="" startthe="" car="" rated="" single="" pulse="" energy="" which="" may="" be="" dissipated="" for="" a="" single="" 10/1300="" ps="" pulse="" oi="" a="" maximum="" rated="" current,="" transient="" energy="" with="" rated="" ac="" voltage="" or="" rated="" dc="" voltage="" also="" applied,="" without="" causing="" device="" iailure="" load="" durnp="" is="" a="" transient="" which="" occurs="" in="" an="" automotive="" environment.="" it="" is="" an="" exponentially="" occurs="" in="" the="" event="" of="" a="" hatt="" nt="" with="" other="" loads="" remaini="" time="" oi="" battery="" disconect="" rated="" peak="" single="" se="" trans="" current="" rated="" transient="" average="" powe="" dissipation="" varistor="" voltage="" temperature="" coeiiicient="" isolation="" the="" maximum="" peak="" voltage="" which="" may="" he="" applied="" under="" continuous="" operating="" conditions="" voltage="" between="" the="" varistor="" terminations="" and="" any="" conducting="" mounting="" suriace="" operating="" the="" range="" of="" ambient="" temperature="" for="" which="" the="" varistor="" is="" designed="" to="" operate="" continuously="" as="" temperature="" defined="" by="" the="" temperature="" limits="" of="" its="" climatic="" category="" uct="Upper" category="" temperature="" 7="" the="" maximum="" amhienttemperature="" ior="" which="" a="" varistor="" ontinuously,="" lct="Lower" catego="" hich="" a="" varistor="" has="" been="" designe="" dhd="Dump" heat="" test="" duration="">
13© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
Terms and Definitions
Term Symbol Definition
Rated AC
Voltage Vrms
Maximum continuous sinusoidal AC voltage (< 5% total harmonic distortion) which may be
appliedtothecomponentundercontinuousoperationconditionsat25°C
Rated DC
Voltage
Vdc
Maximum continuous DC voltage (< 5% ripple) which may be applied to the component under
continuousoperatingconditionsat25°C
Supply
Voltage VThe voltage by which the system is designated and to which certain operating characteristics of
the system are referred; V
rms
= 1, 1 x V
Leakage Current Idc
ThecurrentpassingthroughthevaristoratVdcandat25°Coratanyotherspecified
temperature
Varistor Voltage
Vn
Voltage across the varistor measured at a given reference current In
Reference Current
In
Reference current = 1 mA DC
Clamping Voltage
Protection Level
Vc
The peak voltage developed across the varistor under standard atmospheric conditions, when
passingan8/20μsclasscurrentpulse
Class Current Ic
A peak value of current which is 1/10 of the maximum peak current for 100 pulses at two per
minuteforthe8/20μspulse
Voltage
Clamping
Ratio
Vc/Vapp
Afigureofmeritmeasureofthevaristorclampingeffectivenessasdefinedbythesymbols
Vc/Vapp, where (Vapp = Vrms or Vdc)
Jump
Start
Transient
Vjump
The jump start transient resulting from the temporary application of an overvoltage in excess
of the rated battery voltage. The circuit power supply may be subjected to a temporary
overvoltage condition due to the voltage regulation failing or it may be deliberately generated
when it becomes necessary to boost start the car
Rated Single Pulse
Transient Energy
Wmax
Energywhichmaybedissipatedforasingle10/1,000μspulseofamaximumratedcurrent,
with rated AC voltage or rated DC voltage also applied, without causing device failure
Load
Dump
Transient
WLD
Load Dump is a transient which occurs in an automotive environment. It is an exponentially
decaying positive voltage which occurs in the event of a battery disconect while the alternator
is still generating charging current with other loads remaining on the alternator circuit at the
time of battery disconect
Rated Peak Single
Pulse Transient
Current
Imax
Maximumpeakcurrentwhichmaybeappliedforasingle8/20μspulse,with,ratedline
voltage also applies, without causing device failure
Rated Transient
Average Power
Dissipation
PMaximum average power which may be dissipated due to a group of pulses occurring within a
specifiedisolatedtimeperiod,withoutcausingdevicefailureat25°C
Capacitance
C
Capacitance between two terminals of the varistor measured at 1 kHz
Response Time
tr
The time lag between application of a surge and varistor's "turn-on" conduction action
Varistor Voltage
Temperature
Coefficient
TC (Vnat85°C–Vnat25°C)/(Vnat25°C)x60°C)x100
Insulation Resistance IR Minimum resistance between shorted terminals and varistor surface
Isolation
Voltage
The maximum peak voltage which may be applied under continuous operating conditions
between the varistor terminations and any conducting mounting surface
Operating
Temperature
The range of ambient temperature for which the varistor is designed to operate continuously as
definedbythetemperaturelimitsofitsclimaticcategory
Climatic Category LCT/UCT/DHD
UCT = Upper Category Temperature – the maximum ambient temperature for which a varistor
has been designed to operate continuously, LCT = Lower Category Temperature – the minimum
ambient temperature at which a varistor has been designed to operate continuously
DHD = Dump Heat Test Duration
Storage Temperature
Storage temperature range without voltage applied
ammmc compmm KEIVIEI' cumin:
14© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard V0005_VP • 5/1/2019
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Surface Mount Varistors
VP Plastic Encapsulated 85°C
KEMET Electronics Corporation Sales Offi ces
Foracompletelistofourglobalsalesoffices,pleasevisitwww.kemet.com/sales.
Disclaimer
Allproductspecifications,statements,informationanddata(collectively,the“Information”)inthisdatasheetaresubjecttochange.Thecustomerisresponsiblefor
checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given
herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET) knowledge of typical operating conditions for such
applications,butarenotintendedtoconstitute–andKEMETspecificallydisclaims–anywarrantyconcerningsuitabilityforaspecificcustomerapplicationoruse.
The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes
no obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component
failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards
(such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury
or property damage.
Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicted or that other
measures may not be required.
KEMET is a registered trademark of KEMET Electronics Corporation.

Products related to this Datasheet

VARISTOR 430V 400A 2SMD JLEAD
VARISTOR 430V 400A 2SMD JLEAD
VARISTOR 430V 400A 2SMD JLEAD