Specification for the 2SC4490 in a 149 KB PDF, readable in any common viewer. The part follows the Japanese JIS scheme where 2SC marks an NPN bipolar transistor; no further detail is given in the name. Look inside for absolute maximum ratings, hFE classes, characteristic graphs and a dimensioned drawing. When a failed transistor must be replaced, confirm the marking on the board, then compare ratings and pin order of any substitute before installation.
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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