About Varistors

Varistors

A varistor (also known as a voltage-dependent resistor, or VDR) is a resistor whose resistance changes as the voltage across it increases or decreases. Varistors are typically constructed from a ceramic material containing semiconductor materials such as silicon and germanium. They have a relatively large resistance at low voltage levels, but as the voltage increases, their resistance drops significantly, allowing more current to flow through them. This feature makes them useful for absorbing transient voltages, which are sudden increases in the voltage that can occur when a device is powered on or off. Varistors are also commonly used to provide overvoltage protection, where they absorb and dissipate excessive voltages before they reach sensitive electronic components.

Varistors

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(Ex. GST)(▲▼)		Enter Qty ProductVoltage Rating DCVoltage Rating ACClamping VoltageDiameterPeak Surge CurrentSurge Energy RatingCapacitanceOperating Temperature RangeTermination StylePackagingPackage / CaseSeriesMounting StyleVaristor VoltageMinimum Operating TemperatureMaximum Operating TemperatureQualification
  
                      
TVR07221KFARY


360V 14J 180V 140V 1.2kA Radial Leaded Varistors ROHS
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TKS Availability : 1425
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USD 0.0544
Multiples of: 5

   360 V          -   
B72214P2321K101


Varistors 420V Through Hole,P=7.5mm RoHS
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TDK Availability : 1423
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USD 0.2541
Multiples of: 1

MOV420 VDC320 VAC840 V16 mm6 kA150 J445 pF RadialBulk B72214PPCB Mount510 V- 40 C+ 105 C 
IsoM8-380-B-L2


Varistors IsoMOV 8KA 380Vrms Bulk In-Line
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Bourns Availability : 1423
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USD 0.914
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MOV505 VDC385 VAC1 kV23 mm250 A-50 pF RadialBulk IsoM8Through Hole-- 40 C+ 125 C 
B72660M1140K072


Varistors 16V 250A 900mJ 20mW CU4032K14AUTOG2
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TDK Availability : 1422
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USD 0.5258
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MOV16 VDC14 VAC43 V-250 A12 J2300 pF SMD/SMTBlister Pack4032 (102080 METRIC)CU AutomotivePCB Mount22 V- 40 C+ 85 CAEC - Q200
Hot V07E60P


Littelfuse Varistors 60Vrms 500A 7mm Disc
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Littelfuse Availability : 1421
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USD 0.0294
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MOV85 VDC60 VAC165 V7 mm1.75 kA12 J700 pF RadialBulk LV UltraMOVPCB Mount100 V- 40 C+ 85 C 
TMOV14RP320M


Varistors THERMALLY PROTECTED VARISTOR 14MM
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Littelfuse Availability : 1420
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USD 1.035
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MOV420 VDC320 VAC840 V14 mm6 kA136 J380 pF RadialBulk iTMOVPCB Mount561 V- 55 C+ 85 C 
ERZ-E11A751S1


Varistors 750VDC 0.6W 1mA L/S=7.5mm Long LD
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Panasonic Availability : 1416
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USD 0.275
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MOV615 VDC460 VAC1240 V14 mm5 kA210 J280 pF RadialBulk ERZ - E - S1PCB Mount750 V- 40 C+ 125 C 
V250LA40APX2855


Varistors RADIAL VARISTOR PB FREE D20
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Littelfuse Availability : 1410
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USD 0.51
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Mov330 VDC250 VAC650 V23 mm6.5 kA130 J  RadialBulk La 429 VDC- 55 C+ 125 C 
B72220S3231K101


Varistors Varistor S20K230E3
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TDK Availability : 1404
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USD 0.8259
Multiples of: 1

MOV300 VDC230 VAC595 V22.5 mm12 kA220 J760 pF RadialBulk B722xxS3/4PCB Mount360 V- 40 C+ 105 C 
Hot B72220S0511K101


Varistors 510volts 6500A
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TDK Availability : 1392
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USD 0.1613
Multiples of: 5

   1.355 kV20 mm  340 pF- 40 C to + 85 C Bulk   820 V   
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