The FF6MR12W2M1P_B11 from Infineon Technologies is a MOSFET with Continous Drain Current 200 A, Drain Source Resistance 5.63 to 8.25 milliohm, Drain Source Breakdown Voltage 1200 V, Gate Source Voltage -10 to 20 V, Gate Source Threshold Voltage 3.45 to 5.55 V. Tags: Chassis Mount. More details for FF6MR12W2M1P_B11 can be seen below.