The 2500PK80 from RIR Power Electronics is a Silicon Controlled Rectifier with Breakover Voltage 800 V, Breakover Current 42500 A, Gate Trigger Voltage 1.1 to 3.0 V, Gate Trigger Current 100 to 250 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for 2500PK80 can be seen below.