The SiHD1K4N60E from Vishay is a MOSFET with Continous Drain Current 4.2 A, Drain Source Resistance 1300 to 1450 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Surface Mount. More details for SiHD1K4N60E can be seen below.