The FDD5N50F from onsemi is a MOSFET with Continous Drain Current 3.5 A, Drain Source Resistance 1550 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 5 V. Tags: Surface Mount. More details for FDD5N50F can be seen below.