The FTK4911S from First Silicon is a MOSFET with Continous Drain Current -2.32 to -2.9 A, Drain Source Resistance 55 to 100 milli-ohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.2 to -2.5 V. Tags: Surface Mount. More details for FTK4911S can be seen below.