The FTK3960DD from First Silicon is a MOSFET with Continous Drain Current 111 to 176 A, Drain Source Resistance 2.4 to 4.0 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for FTK3960DD can be seen below.