The APT58F50J from Microchip Technology is a MOSFET with Continous Drain Current 58 A, Drain Source Resistance 65 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 5 V. Tags: Screw Mount. More details for APT58F50J can be seen below.