The FTK2312 from First Silicon is a MOSFET with Continous Drain Current 4.5 A, Drain Source Resistance 27 to 40 milli-ohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.5 to 1.2 V. Tags: Surface Mount. More details for FTK2312 can be seen below.