A 144 KB PDF specification for the 2SC4481 transistor, filed as a schematic but in fact a component datasheet. The 2SC prefix marks an NPN bipolar device in the JIS system. Expect ratings tables, characteristic curves and an outline drawing. It is used to verify the pinout, interpret meter readings on a suspect part and select an equivalent with equal or higher limits. Confirm the marking on the failed transistor and the package style before ordering a substitute.
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.