The BT137-800E from Luguang Electronic Technology is a Triac with Breakover Voltage 800 V, Breakover Current 65 to 71 A, Gate Trigger Voltage 0.25 to 1.5 V, Gate Trigger Current 2.5 to 25 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for BT137-800E can be seen below.