The FTK4904Z from First Silicon is a MOSFET with Continous Drain Current 44.3 to 70 A, Drain Source Resistance 4.2 to 7.0 milli-ohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.0 to 2.5 V. Tags: Surface Mount. More details for FTK4904Z can be seen below.