The AP4048MT from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 16 to 42 A, Drain Source Resistance 7.5 to 11.5 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.3 to 2.3 V. Tags: Surface Mount. More details for AP4048MT can be seen below.