The AP4P090N from Advanced Power Electronics Corp is a MOSFET with Continous Drain Current -2.5 to -3 A, Drain Source Resistance 90 to 125 milli-ohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1 to -3 V. Tags: Surface Mount. More details for AP4P090N can be seen below.