The Si4136DY from Vishay is a MOSFET with Continous Drain Current 46 A, Drain Source Resistance 1.55 to 2.5 milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.2 V. Tags: Surface Mount. More details for Si4136DY can be seen below.