A 109 KB PDF for the 2SK1446, catalogued as a schematic and probably the main data sheet for this transistor. Under the JIS register, the 2SK prefix denotes an N-channel field-effect device. A smaller LS-suffixed sheet also exists in the collection. The document is useful for finding gate, drain and source, checking breakdown voltage and on-resistance, and deciding whether a common substitute will work. Confirm the code and any suffix on the actual part before relying on the stated ratings.
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.