The AP4066CMT from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 52 to 295 A, Drain Source Resistance 0.74 to 1.35 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for AP4066CMT can be seen below.