The Si4190ADY from Vishay is a MOSFET with Continous Drain Current 18.4 A, Drain Source Resistance 7.3 to 12 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.5 to 2.8 V. Tags: Surface Mount. More details for Si4190ADY can be seen below.