The STF5N62K3 from STMicroelectronics is a MOSFET with Continous Drain Current 4.2 A, Drain Source Resistance 1280 to 1600 Milliohm, Drain Source Breakdown Voltage 620 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Through Hole. More details for STF5N62K3 can be seen below.