Gate turn-off thyristor

Gate turn-off thyristor (GTO)
Simplified cross-section of a GTO thyristor
Component typeactive
InventorGeneral Electric
Pin namesanode, gate, cathode
Electronic symbol

A gate turn-off thyristor (GTO) is a type of high-power (e.g. 1200 V AC) thyristor that unlike a normal thyristor is fully controllable and can be turned On and Off by their gate lead.

It was invented by General Electric.