The KP3000A from HUAJING RECTIFIER is a Silicon Controlled Rectifier with Breakover Voltage 100 to 6500 V, Breakover Current 38000 A, Gate Trigger Voltage 0.8 to 3.0 V, Gate Trigger Current 40 to 300 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for KP3000A can be seen below.