The AP4P016I from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current -23 to -36 A, Drain Source Resistance 16 to 28 milli-ohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1 to -3 V. Tags: Through Hole. More details for AP4P016I can be seen below.