The MCQ16N03 from Micro Commercial Components is a MOSFET with Continous Drain Current 16 A, Drain Source Resistance 8 to 16 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for MCQ16N03 can be seen below.