The Si3443CDV from Vishay is a MOSFET with Continous Drain Current 5.97 A, Drain Source Resistance 50 to 100 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.6 to -1.5 V. Tags: Surface Mount. More details for Si3443CDV can be seen below.