V_DC   DC working voltage

The maximum sustained DC voltage at which the varistor is used at highest operating temperature.

V_AC   AC working voltage

The maximum sustained sinusoidal AC operating voltage at which the varistor is used at the highest operating temperature.

IL   Leakage current

The varistor is in a high-impedance state in non-conductive mode, to measure the leakage current at max. continuous working voltage.

V_B   Varistor

Threshold voltage that the varistor switches from the open circuit state to the working state. Normally measured at the current of 1mA DC.

V_C   Clamping voltage

The maximum voltage on a varistor under the condition of a specified pulse current and a 8/20us waveform condition or a ESD waveform.

C_P  Capacitance

The capacitance value of the varistor that measured at 1MHz frequency and 0.5V voltage (AC).

IR    Insulation Resistance

The resistance value of the varistor that measured at 3.6V voltage (DC).