The G80N03K from Goford Semiconductor is a MOSFET with Continous Drain Current 80 A, Drain Source Resistance 3.5 to 10 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2 V. Tags: Surface Mount. More details for G80N03K can be seen below.