The GA301HR from Digitron Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 100 V, Breakover Current 100 A, Gate Trigger Voltage 0.4 to 0.75 V, Gate Trigger Current 10 to 200 µA, Temperature Operating Range 0 to 125 Degree C. Tags: Through Hole. More details for GA301HR can be seen below.