The SiUD403ED-T1-GE3 from Vishay is a MOSFET with Continous Drain Current -0.5 A, Drain Source Resistance 1010 to 4400 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -0.9 to -0.4 V. Tags: Surface Mount. More details for SiUD403ED-T1-GE3 can be seen below.