The AP4NA1R6HCMT from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current 35.7 to 250 A, Drain Source Resistance 1.6 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for AP4NA1R6HCMT can be seen below.