The BTB04-600SL from STMicroelectronics is a Triac with Breakover Voltage 600 V, Breakover Current 35 to 38 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 BTB04-600SL can be seen below.