The 1SS383 is covered in this 69.1 KB PDF, catalogued as a schematic though most likely a datasheet, as 1SS is the Japanese designation for small-signal silicon diodes. The filename names no device, brand or revision. A separate 1SS383T file exists, so confirm which variant is fitted by reading the marking code on the part. Technicians consult this kind of sheet for polarity, package dimensions and maximum ratings when testing or substituting a diode. Any PDF reader handles it.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.