What are the main parameters of the varistor?

A varistor is a voltage sensitive element, which is characterized by the addition of both ends of the varistor.

When the voltage increases to a critical value (nominal voltage value), its resistance will sharply decrease. It is made of semiconductor material with nonlinear volt ampere characteristic, so it belongs to nonlinear resistor. These resistors are mainly made of two kinds of silicon carbide and Zinc Oxide varistors, among which Zinc Oxide varistors have more excellent characteristics.

Main parameters of the varistor.

(1)Nominal voltage refers to the voltage value at the two ends of varistors through 1mA DC current.

(2)Voltage ratio refers to the ratio of the voltage generated by the varistor 1mA to the voltage generated by the current of the varistor

(3) the maximum limiting voltage refers to the maximum voltage value at which both ends of the varistors can be sustained.

(4) Current capacity, also known as through flow, is allowed to pass the maximum pulse (peak) current value on the varistor under the specified conditions (the specified time interval and number of times, the imposition of the standard impact current).

(5)The voltage temperature coefficient refers to the change rate of the nominal voltage of the varistor within the specified temperature range (temperature 20 ~ 709°C), that is, the relative change of the two ends of the varistor when the temperature is changed by the 1°C when the current of the varistor is kept constant.

(6)Insulation resistance refers to the resistance between the lead wire (PIN) of the varistor and the insulation surface of the resistance body.

If you want to know more, our website has product specifications for the varistors, you can go to Allicdata to get more information.

 varistor :CG0402MLA-14LG