The MCR12LNHR from Digitron Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 800 V, Breakover Current 100 A, Gate Trigger Voltage 0.5 to 0.8 V, Gate Trigger Current 2.0 to 8.0 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for MCR12LNHR can be seen below.