The AP4P013LES from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current -31.2 to -50 A, Drain Source Resistance 14.5 to 20 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 AP4P013LES can be seen below.