The FDA20N50_F109 from onsemi is a MOSFET with Continous Drain Current 22 A, Drain Source Resistance 230 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 5 V. Tags: Through Hole. More details for FDA20N50_F109 can be seen below.