The Si3552DV from Vishay is a MOSFET with Continous Drain Current 2.5 A, Drain Source Resistance 85 to 360 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1 to 1 V. Tags: Surface Mount. More details for Si3552DV can be seen below.