PDF datasheet for the 2SC5368, an NPN bipolar transistor under the JIS 2SC scheme, filed under schematics and around 188 KB. The name offers nothing beyond the part number, so manufacturer and intended circuit are unknown. Expect tables of maximum voltage, current and power dissipation along with gain figures and a package drawing. Use it to identify leads correctly, assess a suspect part with a meter and confirm that any replacement meets or exceeds the original ratings before installation.
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.