The Si3129DV from Vishay is a MOSFET with Continous Drain Current -5.4 A, Drain Source Resistance 68.9 to 124.2 milliohm, Drain Source Breakdown Voltage -80 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.5 to -2.5 V. Tags: Surface Mount. More details for Si3129DV can be seen below.