The AP4NA3R8H from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 61 to 96 A, Drain Source Resistance 3.8 to 5.4 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.3 to 3 V. Tags: Surface Mount. More details for AP4NA3R8H can be seen below.