The BT137-800E from FuxinSemi Semiconductor is a Triac with Breakover Voltage 800 V, Breakover Current 65 A, Gate Trigger Voltage 1.3 V, Gate Trigger Current 10 to 25 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for BT137-800E can be seen below.