45.9 KB PDF documenting the 2SK1235 N-channel MOSFET, a JIS-registered Japanese part number. Catalogued as a schematic, it is in fact a component sheet showing ratings and pinout rather than a board layout. Expect absolute maximum ratings, typical characteristics and a mechanical outline. Consult it when checking a transistor for shorts with a multimeter, confirming which pin connects to the supply rail, and verifying that a proposed substitute meets the voltage and current demands of the circuit.
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.