Here the 2SK2746 is documented in a 420 KB PDF, categorised as a schematic yet named like a single-part datasheet. The 2SK code is the JIS designation for N-channel FETs, so expect electrical characteristics and package information. Bench use includes checking pin order before desoldering, confirming whether a replacement can handle the same drain voltage and current, and reading the safe operating area. Nothing beyond the part number appears in the name, so verify the marking on the component 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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.