The AP4N3R2MT from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 24.3 to 135 A, Drain Source Resistance 3.2 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 5 V. Tags: Surface Mount. More details for AP4N3R2MT can be seen below.