The Si3457CDV from Vishay is a MOSFET with Continous Drain Current -5.1 A, Drain Source Resistance 60 to 113 milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1 to -3 V. Tags: Surface Mount. More details for Si3457CDV can be seen below.