The AP55T10GP-HF from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 40 to 56 A, Drain Source Resistance 16.5 milli-ohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 5 V. Tags: Through Hole. More details for AP55T10GP-HF can be seen below.