Peak Inverse Voltage(PIV)
The peak inverse voltage is either the specified maximum voltage that a diode rectifier can block, or, alternatively, the maximum that a rectifier needs to block in a given application.
For an electrical or electronic component or device, the maximum instantaneous value of the voltage in the direction in which there is the greatest resistance to the flow of current. For example, the maximum reverse-biased voltage a semiconductor can safely handle before avalanche breakdown will occur. Its abbreviation is PIV. Also called peak reverse voltage, inverse peak voltage, or reverse peak voltage.