The Si3430DV from Vishay is a MOSFET with Continous Drain Current 1.8 A, Drain Source Resistance 148 to 185 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4.2 V. Tags: Surface Mount. More details for Si3430DV can be seen below.