The FTK3401 from First Silicon is a MOSFET with Continous Drain Current -3.2 to -4 A, Drain Source Resistance 50 to 85 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.5 to -1.3 V. Tags: Surface Mount. More details for FTK3401 can be seen below.