The BT168GWF from WeEN Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 8 A, Gate Trigger Voltage 0.2 to 0.8 V, Gate Trigger Current 0.00045 A, Temperature Operating Range -40 to 150 Degree C. Tags: Surface Mount. More details for BT168GWF can be seen below.