The STF10N105K5 from STMicroelectronics is a MOSFET with Continous Drain Current 6 A, Drain Source Resistance 1000 to 1300 Milliohm, Drain Source Breakdown Voltage 1050 V, Gate Source Voltage 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Through Hole. More details for STF10N105K5 can be seen below.