The KK3000A from HUAJING RECTIFIER is a Silicon Controlled Rectifier with Breakover Voltage 600 to 2500 V, Breakover Current 44000 A, Gate Trigger Voltage 0.9 to 4.5 V, Gate Trigger Current 40 to 450 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for KK3000A can be seen below.