The MCR69-1HR from Digitron Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 25 V, Breakover Current 300 A, Gate Trigger Voltage 0.65 to 1.5 V, Gate Trigger Current 2.0 to 30 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for MCR69-1HR can be seen below.