Small 41.8 KB PDF for the 2SB792, filed as a schematic but named only after a part number, so it is most likely the component datasheet. In JIS numbering the 2SB prefix identifies a PNP transistor generally intended for low-frequency or power applications. The _E suffix in the name is not explained by the file name itself. Use the sheet to verify pin assignment, package drawing and maximum ratings, and match the B792 marking on the part before substituting an equivalent.
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.