Single-part PDF, 125 KB, titled 2SC5316 and placed in the schematic category although it is most likely a datasheet. Under the JIS scheme the 2SC prefix denotes an NPN bipolar transistor. The document should present voltage, current and dissipation limits, electrical characteristics and the case drawing. The file name provides no brand or application detail, so verify against the printed code. Technicians use it to confirm pin assignment, interpret diode-mode readings and choose a correct substitute.
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.