Datasheet-style PDF for the 2SC5646 transistor, 31.7 KB, placed in the schematic category. By Japanese JIS convention, parts beginning with 2SC are NPN bipolar transistors. The file name states no further detail, so maker, case type and limits come only from inside the document. It is useful when a board shows a burnt or shorted transistor and you need the pinout and ratings to test it with a multimeter or source a replacement. Match the printed marking carefully, because small packages often show only a shortened code.
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.