The 2SK1266 N-channel field-effect transistor is documented in this 33.9 KB PDF, indexed as a schematic. The 2SK code identifies a Japanese-registered N-channel device commonly used in switching supplies and motor or lamp drivers. A compact sheet like this provides ratings, threshold voltage and pin order. Rely on it to check a suspected short before desoldering, to confirm pin orientation on the board, and to cross-reference a currently available part with equal or better voltage and current figures.
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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