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Thyristors

Thyristors

TRIACS, Photothyristors, MCTs

4 layer semiconductor devices

Thyristors

A thyristor is a solid-state semiconductor device with four layers of alternating P- and N-type materials. It acts exclusively as a bistable switch, conducting when the gate receives a current trigger, and continuing to conduct until the voltage across the device is reversed biased, or until the voltage is removed (by some other means)