The STP80N240K6 from STMicroelectronics is a MOSFET with Continous Drain Current 16 A, Drain Source Resistance 197 to 220 Milliohm, Drain Source Breakdown Voltage 800 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4 V. Tags: Through Hole. More details for STP80N240K6 can be seen below.