About Varistors

Surging 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
  
                      
7D511K


845V 30J 415V 320V 1.2kA Radial Leaded,P=5mm Varistors ROHS
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SURGING 31641
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USD 0.0155
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10D561K


925V 70J 180pF@1kHz 460V 350V 504V~616V 2.5kA Radial Leaded,P=7.5mm Varistors ROHS
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SURGING 31292
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USD 0.0306
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7D431K


710V 0.25W 28J 115pF@1kHz 350V 275V 430V 1.2kA Radial Leaded,P=5mm Varistors ROHS
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SURGING 29041
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USD 0.0162
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10D511K


845V 0.4W 200pF@1kHz 70J 415V 320V 510V 2.5kA SMD Varistors ROHS
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SURGING 21854
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USD 0.0267
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10D471K


775V 0.4W 65J 385V 210pF@1kHz 300V 470V 2.5kA SMD Varistors ROHS
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SURGING 13628
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USD 0.0325
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7D471K


775V 30J 385V 300V 1.2kA Radial Leaded,P=5mm Varistors ROHS
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SURGING 4578
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USD 0.0189
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5D271K


475V 0.1W 95pF@1kHz 225V 8.5J 175V 270V 400A Radial Leaded,P=7mm Varistors ROHS
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SURGING 3967
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USD 0.0348
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14D102K


1.65kV 190J 825V 625V 4.5kA Radial Leaded,P=7.5mm Varistors ROHS
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SURGING 3327
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USD 0.1334
Multiples of: 5

                  
20D561KJ


925V 710pF@1kHz 460V 350V 504V~616V 380J 10kA Radial Leaded Varistors ROHS
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SURGING 3058
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USD 0.1487
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   925 V          504 V ~ 616 V   
5D471K


810V 0.1W 55pF@1kHz 15J 385V 300V 470V 400A SMD Varistors ROHS
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SURGING 2900
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USD 0.0356
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