The AP4P018M from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current -7.5 to -9.4 A, Drain Source Resistance 18 to 30 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 AP4P018M can be seen below.