Short 61.2 KB PDF for the 2SC2647, with an _E suffix that may mark an English version, though this is not confirmed by the name. Per JIS, 2SC denotes an NPN transistor. Filed under schematics, it is expected to be a datasheet with ratings, electrical characteristics and the package drawing. Technicians use it to verify pinout and limits before replacing a failed transistor or evaluating a cross-reference part. Match the component marking with this number first.
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.