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Help CenterHigh Voltage Surge Protector Zinc Metal Oxide Varistor Surge Arrestor Surge Absorber 20mm 20D681K Mov
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Electronic components- Voltage Dependent Resistor VDR varistor 250PCS/Plastic bag
Type MYG Varistors are made of semiconductor ceramic materials composed mainly of zinc oxide. They have non-linear resistance that change as a function of applied voltage. It has small size, high current capacity, and high protection level.
PRODUCT:HEL20D681K
Varistor voltage(V1mA):680V/612V-748V
Maximum Allowable voltage:420VAC/560VDC
Maximum Clamping voltage:1120V
Withstanding Surge Current(8/20us):6500A/1 time
Rated Wattage(W):1.0W
Energy(2ms):186J
Typical Capacitance:900PF
Ordering Notes:
1. Ceramic Disc: Zinc Oxide Varistor
2. Material of coating: Epoxy resin
3. Material of Leads: CP wire
4. Lead type: Straight lead
5. Package: Bulk pack
Recongnized Certificate:
Function: WORKSHOP
Technical Data:
1. Varistors Voltage:
The voltage between two terminals with the specified measuring current 1mA DC applied is called V1mA,The measurement shall be made as fast as possible to avoid heat affection.
2.Maximum Continuous AC or DC Voltage:
3. Leakage Current:
4.Clamping Voltage:
The peak voltage at class current (Standard surge currentwaveform is 8/20μS). The class current is a peak value of current which is1/10 of the maximum peak current for 100 impulses at per minute for 8/20μS.
5.Energy: The maximum energy within the varistors voltage change of ±10% when one impulse of 2ms or 10/1000μS is applied.
J=1391*Ip* Vc*10-6 Where J -- Energy absorbed in joules.
Ip -- Maximum let-through current in amps.Vc-- Measured clamping voltage in volts.
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