PDF for the 2SC5584 transistor, only 45.9 KB, catalogued under schematics. The name holds nothing beyond the part number, so manufacturer and revision are not given. JIS numbers beginning with 2SC denote NPN transistors of the high-frequency class. Use the document to confirm pinout and package, review the maximum collector voltage, current and power ratings, and pick a suitable equivalent when the original cannot be sourced. Check the C5584 marking on the case before relying on these figures.
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.