The Si4114DY from Vishay is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 4.9 to 7 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -20 to 16 V, Gate Source Threshold Voltage 1 to 2.1 V. Tags: Surface Mount. More details for Si4114DY can be seen below.