The K1500SD1 from JieJie Microelectronics is a Sidac with Breakover Voltage 140 to 170 V, Breakover Current 50 uA, Gate Trigger Voltage 2 V, Gate Trigger Current 1 A, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for K1500SD1 can be seen below.