Part number 2SC5690 is all the name reveals about this 28.8 KB PDF, filed under schematics. Under JIS naming the 2SC prefix denotes an NPN transistor, so the file is best treated as a component datasheet. Manufacturer, package and ratings are not given in the name and must be read from the document itself. Before substituting another transistor, compare breakdown voltage, current, gain, transition frequency and pinout, and verify the original part marking matches this number. It opens in any PDF reader.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.