Metal Oxide Varistor (MOVs)

A varistor is an electronic component with a "diode-like" nonlinear current–voltage characteristic. The name is a portmanteau of variable resistor. Varistors are often used to protect circuits against excessive transient voltages by incorporating them into the circuit in such a way that, when triggered, they will shunt the current created by the high voltage away from sensitive components. A varistor is also known as voltage-dependent resistor (VDR). A varistor’s function is to conduct significantly increased current when voltage is excessive.

Device Ratings and Characteristics

SeriesDesignSize(mm)Max. VDCMax. VACDatasheet
Standard (D)Leaded Disc5 - 2014 - 146511 - 1000
Medium Surge (V )Leaded Disc5 - 20170 - 895130 - 680
High Energy (P)Leaded Disc5 - 2014 - 89511- 680
Ultra High Energy (H)Leaded Disc5 - 20170 - 895130 - 680
High temperature (N)Leaded Disc5 - 2014 - 61511 - 460
High Surge (S)Leaded18 - 22170 - 895130 - 680
Automotive (C)Leaded Disc5 - 2014 - 56-
Thermal Fuse MOVLeaded Disc14 , 20170 - 895130 - 680