The T1635H-8T from STMicroelectronics is a Triac with Breakover Voltage 800 V, Breakover Current 160 to 168 A, Gate Trigger Voltage 1.3 V, Gate Trigger Current 5 to 35 mA, Temperature Operating Range -40 to 150 Degree C. Tags: Through Hole. More details for T1635H-8T can be seen below.