The STFW1N105K3 from STMicroelectronics is a MOSFET with Continous Drain Current 1.4 A, Drain Source Resistance 8000 to 11000 Milliohm, Drain Source Breakdown Voltage 1050 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4.5 V. Tags: Through Hole. More details for STFW1N105K3 can be seen below.