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
  
                      
B72220S2321K101


EPCOS TDK Varistors 320V RMS 20MM RADIAL Varistor S20K320E2
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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.

TDK Availability : 1455
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USD 0.4402
Multiples of: 1

Mov420 V320 V840 V21.5 mm1 kA273 J720 pF- 40 C to + 85 CRadialBulk Disk, Advanced 510 V- 40 C+ 105 C 
VDRS14T300BSE


Vishay BC Components Varistors 300volts 17mm
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Vishay Availability : 1455
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USD 0.4414
Multiples of: 1

Mov385 VDC300 VAC800 V17 mm4.5 kA117 J400 pF- 40 C to + 85 CRadialBulk Vdrs..E 470 VDC- 40 C+ 85 C 
V120MA2B


Varistors 100A 120V 40pF
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Littelfuse Availability : 1455
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USD 0.504
Multiples of: 1

Mov120 VDC75 VAC205 V3 mm100 A 40 pF AxialBulk Ma  - 55 C+ 85 C 
B72220P3151K101


Varistors 150VAC 10% 20mm SuperioR MP
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TDK Availability : 1455
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USD 0.621
Multiples of: 1

MOV200 VDC150 VAC395 V22.5 mm12000 A155 J2050 pF RadialBulk B72220PPCB Mount240 V- 40 C+ 105 C 
B72220Q0321K101


EPCOS TDK Varistors Varistor Q20K320
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TDK Availability : 1455
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USD 0.671
Multiples of: 1

   840 V20 mm  780 pF- 40 C to + 85 C Bulk   510 V   
V20H175P


Varistors 175V 10000A 1400pF 20mm Radial
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Littelfuse Availability : 1455
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USD 0.6796
Multiples of: 1

Mov270 VDC175 VAC455 V20 mm10 kA180 J1400 pF RadialBulk Hmov 297 V- 55 C+ 125 C 
VDRH14V060TSE


Varistors VDR HS 14D 6000A 060V STLDS TAPE e3
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Vishay Availability : 1455
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USD 0.7434
Multiples of: 750

                  
B72220S3321K101


Varistors Varistor S20K320E3
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TDK Availability : 1455
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USD 0.8015
Multiples of: 1

MOV420 VDC320 VAC840 V22.5 mm12 kA320 J540 pF RadialBulk2220 (5750 METRIC)B722xxS3/4PCB Mount510 V- 40 C+ 105 C 
820542501


Varistors WE-VD Disc Varistor 7620pF 1000A 31VDC
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Wurth Availability : 1455
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USD 0.8433
Multiples of: 1

 31 V25 V77 V14 mm1 kA9.4 J7620 pF- 40 C to + 85 CRadialReel We - Vd 39 V- 40 C+ 85 C 
2322-592-14007


40V 400A 5MM VDR AMMO FLANG RADIAL LEAD VARISTOR
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Vishay Availability : 1455
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USD 2.1126
Multiples of: 1

Mlv-------- 55 C to + 85 C Bulk       
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