The MCU05N60A from Micro Commercial Components is a MOSFET with Continous Drain Current 4.5 A, Drain Source Resistance 2500 milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for MCU05N60A can be seen below.