The FTK3906 from First Silicon is a MOSFET with Continous Drain Current 12.6 to 20 A, Drain Source Resistance 5 to 9 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for FTK3906 can be seen below.