A varistor (a.k.a. voltage-dependent resistor (VDR)) is a surge protecting electronic component with an electrical resistance that varies with the applied voltage. [2]

Aug 21, 2020 · The most common varistor is a metal oxide varistor (MOV), which contains a ceramic block composed of zinc oxide particles and a small number of other metal oxides or …

Jul 23, 2025 · What is a Varistor? A varistor is an electronic component that protects electrical circuits against overvoltage. Because its electrical resistance varies with applied voltage, it is …

Jun 16, 2024 · Varistors, also known as Voltage Dependent Resistors (VDRs), are essential components used to protect electronic circuits from voltage surges and spikes.

Jun 13, 2025 · A varistor is a special type of resistor that changes its resistance depending on the voltage applied across it. When the voltage stays within normal limits, the varistor acts like an …

Aug 15, 2025 · A varistor is a device with a nonlinear voltage-current characteristic. It is primarily used to clamp voltage when a circuit is subjected to overvoltage, absorb excess current, and …

Varistors are nonlinear two-element semiconductors that drop in resistance as voltage increases. Voltage dependent resistors are often used as surge suppressors for sensitive circuits. Here …

6 days ago · The varistor remains in this high-resistance state until a sudden voltage transient occurs. The most common type is the Metal Oxide Varistor (MOV), which utilizes a ceramic …

What is a Varistor? A varistor is an electrical component that protects circuits from sudden voltage surges. The word comes from “voltage-dependent resistor,” which describes how it works: its …

Aug 16, 2024 · Varistors are critical components of a PCB. The name “varistor” comes from combining two names: Voltage and Resistor. Voltage + Resistor = Varistor. A varistor is mainly …