The STD1HN60K3 from STMicroelectronics is a MOSFET with Continous Drain Current 1.2 A, Drain Source Resistance 6700 to 8000 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4.5 V. Tags: Surface Mount. More details for STD1HN60K3 can be seen below.