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
  
                      
NVD10UCD820


Varistors 820Volt 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 Availability : 0
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USD 0.3626
Multiples of: 1

Mov670 V510 V1355 V10 mm2.5 kA80 J - 40 C to + 125 CRadialReel Nvd 820 V- 40 C+ 85 CAec - Q200
NVD10UCD910


Varistors 910Volt 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 Availability : 0
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USD 0.3626
Multiples of: 1

Mov745 V550 V1.5 kV10 mm2.5 kA90 J - 40 C to + 125 CRadialReel Nvd 910 V- 40 C+ 85 CAec - Q200
NV73A2BTTE47


Varistors 1206 47V
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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 Availability : 0
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USD 0.3708
Multiples of: 1

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NVD14UCD1800


Varistors 1800Volt 14mm
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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 Availability : 0
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USD 0.3893
Multiples of: 1

Mov1 kV1 kV2.97 kV14 mm4.5 kA360 J - 40 C to + 125 CRadialReel Nvd 1800 V- 40 C+ 85 CAec - Q200
NVD14UCD910


Varistors 910Volt 14mm
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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 Availability : 0
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USD 0.3893
Multiples of: 1

Mov745 V550 V1.5 kV14 mm4.5 kA180 J - 40 C to + 125 CRadialReel Nvd 910 V- 40 C+ 85 CAec - Q200
NV73A2JTTE150


KOA Speer Varistors 1812 150V
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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 Availability : 0
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USD 0.5918
Multiples of: 1

Mov127 VDC95 VAC248 V 300 A5.8 J-- 50 C to + 125 CSmd/SmtReel1812 (4532 METRIC)Nv73 150 VDC- 50 C+ 125 CAec - Q200
NV73A2JTTE82


KOA Speer Varistors 1812 82V
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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 Availability : 0
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USD 0.5918
Multiples of: 1

Mov65 VDC50 VAC135 V 400 A4.5 J-- 50 C to + 125 CSmd/SmtReel1812 (4532 METRIC)Nv73  - 50 C+ 125 CAec - Q200
NVD20UCD390


Varistors 390Volt 20mm
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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 Availability : 0
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USD 0.6574
Multiples of: 1

Mov320 V250 V650 V20 mm6.5 kA195 J - 40 C to + 125 CRadialReel Nvd 390 V- 40 C+ 85 CAec - Q200
NVD20UCD360


Varistors 360Volt 20mm
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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 Availability : 0
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USD 0.6876
Multiples of: 1

Mov300 V230 V595 V20 mm6.5 kA180 J - 40 C to + 125 CRadialReel Nvd 360 V- 40 C+ 85 CAec - Q200
NVD20UCD620


Varistors 620Volt 20mm
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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 Availability : 0
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USD 0.8537
Multiples of: 1

Mov505 V380 V1.025 kV20 mm6.5 kA273 J - 40 C to + 125 CRadialReel Nvd 620 V- 40 C+ 85 CAec - Q200
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First...678910

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