The Si3900DV from Vishay is a MOSFET with Continous Drain Current 2.4 A, Drain Source Resistance 100 to 200 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 Si3900DV can be seen below.