The G58N06K from Goford Semiconductor is a MOSFET with Continous Drain Current 58 A, Drain Source Resistance 10.5 to 15 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for G58N06K can be seen below.