The G50N03D5 from Goford Semiconductor is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 3.2 to 8 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.1 to 2.4 V. Tags: Surface Mount. More details for G50N03D5 can be seen below.