The SiUD401ED-T1-GE3 from Vishay is a MOSFET with Continous Drain Current -0.5 A, Drain Source Resistance 1230 to 3500 milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1.4 to -0.6 V. Tags: Surface Mount. More details for SiUD401ED-T1-GE3 can be seen below.