The AP4P040M from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current -5 to -6.2 A, Drain Source Resistance 40 to 60 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 AP4P040M can be seen below.