The FTK0959D from First Silicon is a MOSFET with Continous Drain Current -19 to -30 A, Drain Source Resistance 36 to 55 milli-ohm, Drain Source Breakdown Voltage -100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.2 to -2.5 V. Tags: Surface Mount. More details for FTK0959D can be seen below.