Covering the 2SK3335, this small PDF (32.6 KB) is a part datasheet placed in the schematic category. Its 2SK prefix places it among N-channel field-effect transistors under Japanese JEITA naming. Technicians rely on such a sheet to identify terminals, read breakdown voltage and on-resistance figures, and confirm the package outline when hunting a replacement for a failed switching device. Nothing beyond the part number is stated in the name, so all specifications must be taken from the document.
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.