The SI1903DL-T1-E3 is a surface mount Schottky rectifier made by Vishay. It has a forward current of 1A, a maximum forward voltage drop of 0.32V, and a reverse voltage rating of 20V. The unit is an in-line dual-in-line (DIL) package, with a maximum junction temperature up to 175°C. This rectifier has an average forward current of 0.67A and a thermal resistance of 270°C/W. It is designed for use in general purpose applications such as overvoltage and electrostatic protection, plus reverse current protection for power supplies, both commercial and industrial. It is RoHS compliant and AEC-Q101 compliant.