The FDD5N50NZTM from onsemi is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 1380 to 1500 milli-ohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -25 to 25 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Surface Mount. More details for FDD5N50NZTM can be seen below.