What is a DIAC?DIAC DefinitionA DIAC is defined as a diode that begins to conduct electricity only after its breakover voltage is exceeded, crucial in electrical circuits for controlling current flow.A DIAC is a diode that conducts electrical current only after its breakover voltage (VBO) has been reached. DIAC stands for “Diode for Alternating Current”. A DIAC is a device which has two electrodes, and it is a member of the thyristor family. DIACs are used in the triggering of thyristors. The fi