The FTK4953 from First Silicon is a MOSFET with Continous Drain Current -4.9 A, Drain Source Resistance 43 to 85 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.0 to -2.0 V. Tags: Surface Mount. More details for FTK4953 can be seen below.