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
  
                      
Z10D330


Varistors 33V 500A 12.5mm
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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.

Semitec 776
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USD 0.3025
Multiples of: 1

MOV26 VDC20 VAC675 V12.5 mm10 kA4.8 J1700 pF RadialBulk Z10DPCB Mount33 V- 40 C+ 85 C 
Z15D331


Varistors 330V 4500A 16mm
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Semitec 679
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USD 0.4534
Multiples of: 1

 270 V210 V1725 V 20 kA115 J1000 pF- 40 C to + 85 C Bulk Z15d  - 40 C+ 85 C 
Z15D151


Varistors 150V 4500A 16mm
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Semitec 669
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USD 0.4625
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MOV125 VDC95 VAC36 V16 mm2 kA53 J0.04 uF RadialBulk Z15DPCB Mount150 V- 40 C+ 85 C 
Z10D221


Semitec Varistors 220V 2500A 12.5mm
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Semitec 665
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USD 0.3025
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MOV180 VDC140 VAC135 V12.5 mm1 kA39 J5500 pF RadialBulk Z10DPCB Mount220 V- 40 C+ 85 C 
Z7D390


Varistors 39V 250A 8.5mm
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Semitec 563
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USD 0.2187
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MOV31 VDC25 VAC710 V8.5 mm6.5 kA2.4 J1000 pF RadialBulk Z7DPCB Mount39 V- 40 C+ 85 C 
Z10D820


Varistors 82V 2500A 12.5mm
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Semitec 528
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USD 0.3025
Multiples of: 1

MOV85 VDC50 VAC595 V12.5 mm1.25 kA14 J130 pF RadialBulk Z10DPCB Mount82 V- 40 C+ 85 C 
Z10D471


Varistors 470V 2500A 12.5mm
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Semitec 463
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USD 0.3025
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MOV385 VDC300 VAC200 V12.5 mm1.25 kA85 J590 pF RadialBulk Z10DPCB Mount470 V- 40 C+ 85 C 
Z10D560


Varistors 56V 500A 12.5mm
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Semitec 144
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USD 0.3025
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MOV45 VDC35 VAC340 V12.5 mm1.25 kA8.1 J200 pF RadialBulk Z10DPCB Mount56 V- 40 C+ 85 C 
Z21D151


Varistors 150V 6500A 22.5mm
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Semitec 114
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USD 0.66
Multiples of: 1

MOV125 VDC95 VAC1.65 kV22.5 mm2.5 kA106 J110 pF RadialBulk Z21DPCB Mount150 V- 40 C+ 85 C 
Z25M471S


Varistors 470V 10000A mm
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Semitec 82
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USD 23.916
Multiples of: 1

 350 V250 V845 V 4.5 kA235 J350 pF- 40 C to + 85 C Bulk Z25m  - 40 C+ 85 C 
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