Indexed as a schematic, this 79.2 KB PDF is named 2SC4400 and should be the reference datasheet for that NPN bipolar transistor. JIS part numbers beginning with 2SC cover NPN types intended mainly for high-frequency service, though many are used in general amplification and switching. The name says nothing about the maker or package. Use it in a PDF viewer to look up lead order, hFE ranks and voltage ratings while diagnosing a shorted or open junction, and compare the marking on the PCB part to the document.
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.