The STF2N80K5 from STMicroelectronics is a MOSFET with Continous Drain Current 2 A, Drain Source Resistance 3500 to 4500 Milliohm, Drain Source Breakdown Voltage 800 V, Gate Source Voltage 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Through Hole. More details for STF2N80K5 can be seen below.