The MCU20N10A from Micro Commercial Components is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 35 to 60 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for MCU20N10A can be seen below.