The STP11NK50ZFP from STMicroelectronics is a MOSFET with Continous Drain Current 10 A, Drain Source Resistance 480 to 520 Milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Through Hole. More details for STP11NK50ZFP can be seen below.