The MSC017SMA120S from Microchip Technology is a MOSFET with Continous Drain Current 100 A, Drain Source Resistance 17.6 to 22 milliohm, Drain Source Breakdown Voltage 1200 V, Gate Source Voltage -10 to 23 V, Gate Source Threshold Voltage 1.9 to 2.7 V. Tags: Surface Mount. More details for MSC017SMA120S can be seen below.