Filed as a schematic, this 242 KB PDF is named after the 2SC3303 and almost certainly contains the datasheet for that NPN transistor, the 2SC prefix being the Japanese JIS code for NPN parts. No package or rating information is given in the name itself. Check the printed marking on the device against the document, verify collector, base and emitter positions, and confirm voltage and current limits before fitting any replacement.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)