The SST131U-800D from SMC Diode Solutions is a Triac with Breakover Voltage 800 V, Breakover Current 16 A, Gate Trigger Voltage 1.3 V, Gate Trigger Current 5 to 10 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for SST131U-800D can be seen below.