The Si5446DU from Vishay is a MOSFET with Continous Drain Current 25 A, Drain Source Resistance 5.4 to 8.5 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for Si5446DU can be seen below.