The FTK3903 from First Silicon is a MOSFET with Continous Drain Current -7.8 to -13 A, Drain Source Resistance 8 to 15 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.0 to -2.5 V. Tags: Surface Mount. More details for FTK3903 can be seen below.