The FTK3407A from First Silicon is a MOSFET with Continous Drain Current -3.2 to -4.1 A, Drain Source Resistance 36 to 65 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1 to -2.4 V. Tags: Surface Mount. More details for FTK3407A can be seen below.