The AP12NA012H from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 37.6 to 60 A, Drain Source Resistance 12.0 milli-ohm, Drain Source Breakdown Voltage 120 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.5 to 4.5 V. Tags: Surface Mount. More details for AP12NA012H can be seen below.