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
  
                      
TMOV14RP300ML2B7


Varistors THERMALLY PROTECTED VARISTOR 14MM
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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 : 1116
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USD 1.26
Multiples of: 1

Mov385 VDC300 VAC775 V14 mm6 kA125 J400 pF RadialBulk Itmov 517 V- 55 C+ 85 C 
Hot MOV-10D180K


Var MOV 11VAC/14VDC 500A 18V Thru-Hole Radial Bulk
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Bourns Availability : 1115
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USD 0.0928
Multiples of: 1

 20 V 36 V10 mm500 A2.1 J5600 pF- 40 C to + 85 C Bulk Mov - 10Dxxxk  - 40 C+ 85 C 
V390MA3A


Varistors 234V 100A 12pF
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Littelfuse Availability : 1115
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USD 0.4192
Multiples of: 1

Mov322 V234 V670 V3 mm100 A 12 pF- 55 C to + 85 CAxialBulk Ma  - 55 C+ 85 C 
TMOV20RP175E


Varistors THERMALLY PROTECTED VARISTOR 20MM
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Littelfuse Availability : 1115
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USD 1.2372
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MOV225 VDC175 VAC455 V20 mm10 kA135 J1400 pF RadialBulk TMOVPCB Mount297 V- 55 C+ 85 C 
Hot VC080505C150RP


Varistors 4VAC 5.6VDC 0.3J 3000pF 8.5 V 18V
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Kyocera AVX Availability : 1112
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USD 0.1208
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MLV5.6 VDC4 VAC18 V-120 A300 mJ3000 pF SMD/SMTReel , Cut Tape0805 (2012 METRIC)VCPCB Mount8.5 V- 55 C+ 125 C 
VC060318A400DP


Varistors 13VAC 18VDC 0.1J 150pF 25.5 V 42V
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Kyocera AVX Availability : 1111
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USD 0.0468
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Mlv18 V13 V42 V 30 A0.1 J150 pF- 55 C to + 125 CSmd/SmtReel0603 (1608 METRIC)Vc     
VCUG080150L1DP


Varistors 11VAC 15VDC 0.1J 120pF 31.1 V 60V
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Kyocera AVX Availability : 1106
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USD 0.1512
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Mov15 V11 V60 V 30 A0.1 J120 pF SolderReel0805 (2012 METRIC)Ultraguard 31.1 V- 55 C+ 125 C 
B72210S0621K101


EPCOS TDK Varistors 625V RMS 10MM RADIAL Varistor S10K625
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TDK Availability : 1105
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USD 0.1021
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Mov825 VDC625 VAC1.65 kV12 mm2.5 kA68 J110 pF- 40 C to + 85 CRadialBulk B722 1 k VDC- 40 C+ 105 C 
V320LA40BPX2855


Varistors 20MM Radial
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Littelfuse Availability : 1105
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USD 0.51
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 501 VDC 810 V      Bulk La     
VDRUS10T550BSE


Varistors 550V 4500A 10D Radial
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Vishay Availability : 1104
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USD 0.6761
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Mov745 VDC550 VAC1.5 kV12.5 mm4.5 kA152 J120 pF RadialBulk VdrusPcb Mount910 V- 40 C+ 125 C 
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