The AP4N3R6H from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 75 to 130 A, Drain Source Resistance 3.6 to 5 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for AP4N3R6H can be seen below.