The G30N04D3 from Goford Semiconductor is a MOSFET with Continous Drain Current 30 A, Drain Source Resistance 6.5 to 12 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for G30N04D3 can be seen below.