The STF11NM50N from STMicroelectronics is a MOSFET with Continous Drain Current 8.5 A, Drain Source Resistance 400 to 470 Milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage - 25 to 25 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for STF11NM50N can be seen below.