About Varistors

Cov 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
  
                      
20D621K


Varistors 505V 1025V 6.5KA Through Hole RoHS
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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.

COV Availability : 9700
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USD 0.1415
Multiples of: 5

   1025 V          620 (558 ~ 682)   
20D751K


Varistors 615V 750 (675~825) 1240V 6.5KA Through Hole RoHS
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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.

COV Availability : 9700
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USD 0.1622
Multiples of: 5

   1240 V          675 V ~ 825 V   
14D330K


Varistors 26V 65V 1KA Through Hole RoHS
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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.

COV Availability : 9690
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USD 0.0799
Multiples of: 5

   65 V              
07D471K


Varistors 385V 810V 1.2KA Through Hole RoHS
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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.

COV Availability : 9680
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USD 0.0237
Multiples of: 20

   810 V              
COV-07D390KSC200B


Varistors 31V 80V 250A Through Hole RoHS
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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.

COV Availability : 9680
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USD 0.0238
Multiples of: 20

   80 V              
05D470K


Varistors 38V 104V 100A Through Hole RoHS
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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.

COV Availability : 9680
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USD 0.0273
Multiples of: 10

   104 V          42 V ~ 52 V   
07D561K


Varistors 460V 925V 1.2KA Through Hole RoHS
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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.

COV Availability : 9583
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USD 0.0224
Multiples of: 20

   925 V              
10D471K


Varistors 385V 775V 2.5KA Through Hole RoHS
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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.

COV Availability : 9583
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USD 0.0382
Multiples of: 10

   775 V              
COV-07D560KSC200B


Varistors 45V 110V 250A Through Hole RoHS
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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.

COV Availability : 9370
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USD 0.0187
Multiples of: 20

   110 V              
07D391K


Varistors 320V 675V 1.2KA Through Hole,P=5.0mm RoHS
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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.

COV Availability : 9156
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USD 0.019
Multiples of: 20

   675 V          351 V ~ 429 V   
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