The SIS590DN-T1-GE3 from Vishay is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 139 to 338 milliohm, Drain Source Breakdown Voltage -100 to 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -2.5 to 2.5 V. Tags: Surface Mount. More details for SIS590DN-T1-GE3 can be seen below.