Datasheet in PDF format for the 2SC5583, 46.0 KB in size. The file name states the part number and nothing else. Under the Japanese JIS designation system the 2SC prefix identifies an NPN high-frequency transistor. Technicians refer to such sheets for terminal identification, absolute maximum ratings, hFE classes and package outline when replacing a failed device. Before substituting, verify the shortened marking C5583 on the component and make sure the alternative matches the package and meets the voltage and current limits.
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.