Component sheet for the 3SK268 supplied as a 32.8 KB PDF and placed in the schematic category. Beyond the part number, the name gives no further detail. In Japanese JIS designations, 3SK identifies a four-lead N-channel FET, a group mostly made up of dual-gate MOSFETs for VHF and UHF stages. Use it to verify pinout, operating limits and the package outline when repairing an RF front end, and make sure any substitute matches both the electrical data and the footprint.
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.