The C3M0040120J1 from Wolfspeed is a MOSFET with Continous Drain Current 42 to 64 A, Drain Source Resistance 40 to 60 Milliohm, Drain Source Breakdown Voltage 1200 V, Gate Source Voltage -8 to 19 V, Gate Source Threshold Voltage 1.8 to 3.6 V. Tags: Surface Mount. More details for C3M0040120J1 can be seen below.