The MCU80N03 from Micro Commercial Components is a MOSFET with Continous Drain Current 80 A, Drain Source Resistance 2.8 to 6 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 0.8 to 2.5 V. Tags: Surface Mount. More details for MCU80N03 can be seen below.