Download the MBRF830 datasheet PDF.
This datasheet also covers the MBRF8100_GalaxySemi variant, as both devices belong to the same schottky barrier rectifier family and are provided as variant models within a single manufacturer datasheet.
Note: The manufacturer provides a single datasheet file (MBRF8100_GalaxySemi-ConductorHoldingsLimited.pdf) that lists specifications for multiple related part numbers.