Catalogued as a schematic, this 98.6 KB PDF carries only the JIS part number 2SC3446 in its name. A 2SC code identifies an NPN bipolar transistor, so the document is most probably a datasheet with pin assignment, electrical limits and outline dimensions. It supports replacing a failed transistor correctly and selecting a substitute with adequate voltage, current and dissipation margins. Check the stamped marking, typically C3446, and any rank suffix on the original component first.
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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