About Varistors

Semitec 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
  
                      
Z15D820


Varistors 82V 4500A 16mm
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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.

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6 to 16 Weeks Calender.png

USD 0.4625
Multiples of: 1

MOV65 VDC50 VAC135 V16 mm250 A28 J2900 pF RadialBulk Z15DPCB Mount82 V- 40 C+ 85 C 
Z21D201


Varistors 200V 6500A 22.5mm
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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.

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USD 0.6072
Multiples of: 1

MOV170 VDC130 VAC250 V22.5 mm2.5 kA140 J1100 pF RadialBulk Z21DPCB Mount200 V- 40 C+ 85 C 
Z21D331


Varistors 330V 6500A 22.5mm
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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.

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USD 0.6265
Multiples of: 1

MOV270 VDC210 VAC650 V22.5 mm2.5 kA228 J300 pF RadialBulk Z21DPCB Mount330 V- 40 C+ 85 C 
Z15D821


Varistors 820V 4500A 16mm
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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.

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USD 0.6378
Multiples of: 1

 670 VDC510 VAC77 V8.5 mm250 A235 J1600 pF RadialBulk Z15DPCB Mount - 40 C+ 85 C 
Z15D681


Varistors 680V 4500A 16mm
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USD 0.6378
Multiples of: 1

 560 V420 V43 V 250 A190 J3600 pF- 40 C to + 85 C Bulk Z15d  - 40 C+ 85 C 
Z21D221


Varistors 220V 6500A 22.5mm
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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.

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USD 0.6403
Multiples of: 1

 180 VDC140 VAC360 V12.5 mm2.5 kA155 J410 pF RadialBulk Z21DPCB Mount - 40 C+ 85 C 
Z21D470


Varistors 47V 2000A 22.5mm
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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.

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USD 0.6403
Multiples of: 1

 38 VDC30 VAC1.12 kV12.5 mm2.5 kA34 J170 pF RadialBulk Z21DPCB Mount - 40 C+ 85 C 
Z21D820


Varistors 82V 2000A 22.5mm
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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.

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USD 0.6403
Multiples of: 1

 65 V50 V340 V 4.5 kA56 J770 pF- 40 C to + 85 C Bulk Z21d  - 40 C+ 85 C 
Z21D361


Varistors 360V 6500A 22.5mm
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USD 0.6403
Multiples of: 1

 300 VDC230 VAC710 V12.5 mm2.5 kA255 J270 pF RadialBulk Z21DPCB Mount - 40 C+ 85 C 
Z21D271


Varistors 270V 6500A 22.5mm
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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.

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USD 0.6403
Multiples of: 1

 225 V175 V545 V 2.5 kA190 J300 pF- 40 C to + 85 C Bulk Z21d  - 40 C+ 85 C 
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