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
  
                      
VDRS10P320BSE


Vishay BC Components Varistors 320volts 5mm Radial
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 1027
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USD 0.39
Multiples of: 1

Mov420 VDC320 VAC850 V13.5 mm2.5 kA77 J220 pF- 40 C to + 85 CRadialBulk Vdrs..E 510 VDC- 40 C+ 85 C 
TMOV20RP510M


Varistors THERMALLY PROTECTED VARISTOR 20MM
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse Availability : 1026
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USD 1.575
Multiples of: 1

Mov902 VDC510 VAC1.355 kV20 mm10 kA325 J350 pF RadialBulk Itmov  - 55 C+ 85 C 
VDRS05C460BSE


Varistors 460volts 7mm 5mm
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Vishay Availability : 1024
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USD 0.2007
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Mov615 V460 V1.2 kV7 mm400 A21 J30 pF- 40 C to + 85 CRadialBulk Vdrs..E 750 V- 40 C+ 85 C 
VG121030H620DP


Varistors 21VAC 30VDC 1.2J 1850pF 41 V 67V
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Kyocera AVX Availability : 1024
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USD 0.3645
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Mlv30 VDC21 VAC67 V-280 A1.2 J1850 pF- 55 C to + 125 CSmd/SmtReel1210 (3225 METRIC)Vg 41 V- 55 C+ 125 C 
V140LA20CP


Varistors 140V
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Littelfuse Availability : 1024
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USD 0.63
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MOV140 VDC140 VAC360 V20 mm9 kA210 J- RadialBulk C - IIIPCB Mount242 V- 55 C+ 85 C 
ERZ-V14D102


Varistors 1KV 4500A ZNR SUR ABSORBER 14MM
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Panasonic Availability : 1020
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USD 0.438
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Mov825 V625 V1.65 kV14 mm5 kA 230 pF- 40 C to + 85 CRadial  V 1000 V- 40 C+ 85 C 
14D511K


845V 390pF@1kHz 415V 320V 459V~561V 125J 4.5kA Radial Leaded,P=7.5mm Varistors ROHS
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SURGING Availability : 1019
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USD 0.0565
Multiples of: 5

   845 V          459 V ~ 561 V   
B72220S0381K101


Varistors 385V Through Hole RoHS
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TDK Availability : 1018
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USD 0.1396
Multiples of: 5

   1.025 kV20 mm  450 pF- 40 C to + 85 C Bulk   620 V   
V20H420P


Varistors 420V 10000A 600pF 20mm Radial
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Littelfuse Availability : 1018
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USD 0.6451
Multiples of: 1

Mov680 VDC420 VAC1.12 kV20 mm10 kA330 J600 pF RadialBulk Hmov 748 VDC- 55 C+ 125 C 
V2F118C400Y1FDP


Varistors 13VAC 18VDC 0.3J 500pF 25.5 V 42V
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Kyocera AVX Availability : 1016
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USD 0.3071
Multiples of: 1

Mlv18 V13 V42 V 120 A0.3 J500 pF Smd/SmtReel0805 (2012 METRIC)V2f1 42 V- 55 C+ 125 C 
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