The X0405L-6-B-TA3-T from Unisonic Technologies is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 30 to 33 A, Gate Trigger Voltage 0.8 V, Gate Trigger Current 20 to 50 uA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for X0405L-6-B-TA3-T can be seen below.