Covering the 2SK2095N N-channel field-effect transistor, this 128 KB PDF is catalogued under schematics but is presumably a datasheet. The 2SK prefix follows Japanese JIS numbering. The trailing N is part of the stated part number, and no maker is named. A near-identical file with a 1-5 suffix exists in the index. Technicians use the sheet to verify voltage and current limits, package pinout and switching data when diagnosing or swapping the MOSFET.
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.