A 110 KB PDF labelled 2SJ440 and listed under schematics. The 2SJ prefix is the Japanese JIS code for P-channel field-effect transistors, so the content is likely a datasheet for one discrete part. It provides pin assignments, absolute maximum ratings and electrical characteristics, which help when a P-channel switch is shorted, when pins must be identified on an unfamiliar board, or when choosing a cross-reference. The name itself says nothing about package or maker, so inspect the original component marking.
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.