The Si4435FDY from Vishay is a MOSFET with Continous Drain Current -12.6 A, Drain Source Resistance 15 to 30 milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1 to -2.2 V. Tags: Surface Mount. More details for Si4435FDY can be seen below.