The AP3838CDT33 from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 18.8 to 50 A, Drain Source Resistance 4.2 to 5.9 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 1.1 to 1.9 V. Tags: Surface Mount. More details for AP3838CDT33 can be seen below.