The FTK8974DFN56 from First Silicon is a MOSFET with Continous Drain Current 50 to 80 A, Drain Source Resistance 3.2 to 6.2 milli-ohm, Drain Source Breakdown Voltage 80 V, Gate Source Voltage -12 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for FTK8974DFN56 can be seen below.