The AP2P053N from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current -3.4 to -4.2 A, Drain Source Resistance 53 to 100 milli-ohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.5 to -1.2 V. Tags: Surface Mount. More details for AP2P053N can be seen below.