The Si5459DU from Vishay is a MOSFET with Continous Drain Current 8 A, Drain Source Resistance 43 to 82 Milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1.4 to -0.6 V. Tags: Surface Mount. More details for Si5459DU can be seen below.