The MSC025SMA120J from Microchip Technology is a MOSFET with Continous Drain Current 77 A, Drain Source Resistance 25 to 31 milliohm, Drain Source Breakdown Voltage 1200 V, Gate Source Voltage -10 to 23 V, Gate Source Threshold Voltage 1.8 to 2.8 V. Tags: Screw Mount. More details for MSC025SMA120J can be seen below.