The MCT04N15 from Micro Commercial Components is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 130 to 160 milliohm, Drain Source Breakdown Voltage 150 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.5 to 2.5 V. Tags: Surface Mount. More details for MCT04N15 can be seen below.