The FDP20N50F from onsemi is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 220 to 260 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Through Hole. More details for FDP20N50F can be seen below.