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 V275LA20CP


710V 275V 430V Plugin Varistors ROHS
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Littelfuse Availability : 2864
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USD 0.2431
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MOV275 VDC275 VAC710 V14 mm6 kA145 V- RadialBulk C - IIIPCB Mount473 V- 55 C+ 85 C 
B72207S1390K201


Varistors 50VDC 1.2kA 900pF S07V42AUTOS2D1
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TDK Availability : 1328
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USD 0.2036
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V275LA40APX2855


Varistors 20MM Radial
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USD 0.51
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MOV369 VDC275 VAC710 V20 mm6.5 kA140 J900 pF RadialBulk LAPCB Mount473 V- 55 C+ 85 C 
TVR10621KFABD04Y


Plugin,P=7.5mm Varistors ROHS
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TKS Availability : 1327
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USD 0.0725
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TMOV14RP300M


Varistors THERMALLY PROTECTED VARISTOR 14MM
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Littelfuse Availability : 1326
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USD 0.9931
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MOV517 VDC300 VAC775 V14 mm6 kA125 J400 pF RadialBulk iTMOVPCB Mount517 V- 55 C+ 85 C 
TNR23G241K


Var MOV 150VAC/200VDC 6500A 240V Thru-Hole Radial Ammo
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Chemi-Con Availability : 1325
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USD 0.6518
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181KD07


Varistors 150V 180 (162~198) 300V 1.2KA Through Hole RoHS
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Yageo Availability : 1324
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USD 0.0171
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MOV150 VDC115 VAC300 V7 mm1.2 kA11.7 J280 pF RadialBulk 05DThrough Hole180 V- 40 C+ 105 C 
VDR4032K511G2


SMD Varistors ROHS
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VDR Availability : 1324
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USD 0.0441
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V270MA4B


Littelfuse Varistors 163V 100A 17pF
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USD 0.4192
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MOV235 VDC171 VAC440 V3 mm100 A1 J17 pF RadialBulk MAPCB Mount270 V- 55 C+ 85 C 
V33CH8


Varistors 20V 100A 750pF 13 Inch Reel
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USD 0.7164
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Mov26 VDC20 VAC68 V 100 A1 J750 pF- 55 C to + 125 CSmd/SmtReel3220 (8552 METRIC)Ch 33 VDC- 55 C+ 125 C 
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