The SiS488DN-T1-GE3 from Vishay is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 4.5 to 7.5 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.1 to 2.2 V. Tags: Surface Mount. More details for SiS488DN-T1-GE3 can be seen below.