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
  
                      
Hot V56ZA20P


Varistors 35 VAC 30J 110V-CLAMP 2KA-PK
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Littelfuse Availability : 2058
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USD 0.3657
Multiples of: 1

Mov45 V35 V110 V20 mm2 kA30 J10000 pF- 55 C to + 85 C Bulk Za  - 55 C+ 85 C 
B72205S0200K211


Var MOV 20VAC/26VDC 100A 33V Radial T/R
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TDK Availability : 1455
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USD 0.295
Multiples of: 1500

   65 V      Tape And Reel   33 V   
R69ZOV321HC


MOV - HC, 12mm Sqr, 320VAC, 10000A Imax (aka 01-1948)
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Maida Availability : 1455
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USD 0.3649
Multiples of: 30

          -       
MOVGT07V440K


Varistors MOVGT - MOV & GDT Combination, 7 mm disc size, 440 V MCOV
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Eaton Availability : 1455
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USD 0.3817
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MOV, GDT        AxialBulk MOVGT     
V120MA1A


Littelfuse Varistors 100A 120V 40pF
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Littelfuse Availability : 1455
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USD 0.3979
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MOV97 VDC72 VAC220 V3 mm100 A0.4 J40 pF RadialBulk MAPCB Mount120 V- 55 C+ 85 C 
V275LC40APX10


Varistors RADIAL VARISTOR 20MM ROHS/LEAD FREE
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Littelfuse Availability : 1455
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USD 0.4047
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Mov369 VDC275 VAC710 V20 mm6.5 kA 900 pF- 55 C to + 85 CRadialBulk La     
V56MA2B


Varistors 53V 40A 180pF
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Littelfuse Availability : 1455
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USD 0.4192
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MOV45 VDC35 VAC108 V3 mm40 A0.25 J180 pF RadialBulk MAPCB Mount56 V- 55 C+ 85 C 
B72220S0321K551


EPCOS TDK Varistors Varistor S20K320G5S5
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TDK Availability : 1455
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USD 0.4229
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Mov420 VDC320 VAC840 V21.5 mm8 kA184 J720 pF- 40 C to + 85 CRadialReel B722 510 VDC- 40 C+ 105 C 
Hot V68ZA20P


Varistors RADIAL VARISTOR 20MM ROHS / LEAD FREE
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Littelfuse Availability : 727
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USD 0.3009
Multiples of: 1

MOV56 VDC40 VAC135 V20 mm2 kA33 J0.01 uF RadialBulk ZAPCB Mount74.8 V- 55 C+ 85 C 
Hot V33ZT70P


Var MOV 21VAC/27VDC 2000A 36.5V Radial Automotive T/R
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Littelfuse Availability : 32
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USD 0.3163
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Mov27 VDC21 VAC58 V20 mm2 kA70 J13000 pF- 55 C to + 85 CRadialReel Za     
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