transient-voltage-suppression diode

A transient-voltage-suppression diode may be either unidirectional or bidirectional.

This makes transient-voltage-suppression diodes useful for protection against very fast and often damaging voltage transients.

A transient-voltage-suppression diode can respond to over-voltages faster than other common over-voltage protection components such as varistors or gas discharge tubes.

A bidirectional transient-voltage-suppression diode can be represented by two mutually opposing avalanche diodes in series with one another and connected in parallel with the circuit to be protected.