Zinc Oxide Varistors

  • Zinc Oxide Varistor

    Zinc Oxide Varistor

    Metal Oxide Varistor/Zinc Oxide Varistor is non-linear resistor utilizing as semiconductor electrocnic ceramic element mainly composed of zinc oxide. It’s called varistor or mental oxide varistor(MOV), just as it is sensitive to voltage’s change.  The body of varistor is a matrix structure composed of zinc oxide particles. The grain boundaries between particles are similar to the electrical characteristics of bidirectional PN junctions. When the voltage is low  these grain boundaries are in the high impedance state  and when the voltage is high  they will be in the breakdown state  which is a kind of non-linear device.