The FTK2309S from First Silicon is a MOSFET with Continous Drain Current -3.7 to -5.8 A, Drain Source Resistance 28 to 65 milli-ohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -10 to 10 V, Gate Source Threshold Voltage -0.3 to -1.0 V. Tags: Surface Mount. More details for FTK2309S can be seen below.