What is a varistor?

Varistor "is the term in mainland China, meaning that in a certain current and voltage range of resistance with the voltage change, or" resistance value of the voltage sensitive "resistance. English name is" Voltage Dependent Resistor "abbreviated as" VDR ", or" Varistor ". The varistor material is a semiconductor, so it is a variety of semiconductor resistors. Now a large number of" zinc oxide "(ZnO) varistors, its main material There is a divalent element (Zn) and hexavalent element oxygen (O), so from the point of view of the material, zinc oxide varistor is a "Ⅱ-Ⅵ oxide semiconductor." In Taiwan, China A resistor is called a "surge absorber" and is sometimes referred to as an "electric shock (surge) suppressor (absorber)".