About Varistors

KOA Speer 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
  
                      
NVD07UCD360


Varistors 360Volt 7mm
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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.

KOA Speer 2176
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USD 0.1017
Multiples of: 1

Mov300 V230 V595 V7 mm1.25 kA23 J - 40 C to + 125 CRadialReel Nvd 360 V- 40 C+ 85 CAec - Q200
NVD07UCD022


Varistors 22Volt 7mm
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KOA Speer 2016
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USD 0.0787
Multiples of: 1

Mov18 V14 V43 V7 mm250 A1.1 J - 40 C to + 125 CRadialReel Nvd 22 V- 40 C+ 85 CAec - Q200
NV73A2ATTE15


Varistors 0805 15V
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KOA Speer 1955
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USD 0.2829
Multiples of: 1

MOV10.8 VDC7.6 VAC29 V-20 A40 mJ- SMD/SMTReel , Cut Tape0805 (2012 METRIC)NV73PCB Mount15 V- 40 C+ 85 CAEC - Q200
NVD10UCD047


KOA Speer Varistors 47Volt 10mm
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KOA Speer 1945
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USD 0.2508
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Mov38 VDC30 VAC93 V10 mm500 A5.7 J-- 40 C to + 125 CRadialReel Nvd 47 VDC- 40 C+ 85 CAec - Q200
NVD14UCD390


Varistors 390Volt 14mm
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KOA Speer 1888
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USD 0.2872
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Mov320 V250 V650 V14 mm4.5 kA100 J - 40 C to + 125 CRadialReel Nvd 390 V- 40 C+ 85 CAec - Q200
NV73A2ETTE39


Varistors 1210 39V
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KOA Speer 1746
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USD 0.364
Multiples of: 1

MOV30 VDC25 VAC65 V-400 A1.7 J- SMD/SMTReel , Cut Tape1210 (3225 METRIC)NV73PCB Mount39 V- 50 C+ 125 CAEC - Q200
NV73A2ATTE33


Varistors 0805 33V
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KOA Speer 1629
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USD 0.2861
Multiples of: 1

MOV26 VDC20 VAC60 V 20 A120 mJ- SMD/SMTReel , Cut Tape0805 (2012 METRIC)NV73PCB Mount - 40 C+ 85 CAEC - Q200
NVD14UCD430


Varistors 430Volt 14mm
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KOA Speer 1486
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USD 0.2872
Multiples of: 1

Mov350 V275 V710 V14 mm4.5 kA110 J - 40 C to + 125 CRadialReel Nvd 430 V- 40 C+ 85 CAec - Q200
NVD10UCD330


Varistors 330Volt 10mm
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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.

KOA Speer 1453
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USD 0.2823
Multiples of: 1

Mov270 V210 V545 V10 mm2.5 kA42 J - 40 C to + 125 CRadialReel Nvd 330 V- 40 C+ 85 CAec - Q200
NVD10UCD390


Varistors 390Volt 10mm
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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.

KOA Speer 1441
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USD 0.2823
Multiples of: 1

MOV320 VDC250 VAC650 V10 mm2.5 kA50 J- RadialReel , Cut Tape UPCB Mount390 V- 40 C+ 85 CAEC - Q200
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