Datasheet PDF, 292 KB, for the 2SK1829 transistor. Under JIS naming, 2SK marks an N-channel FET; the file name gives only the part number, with no maker or package stated. Datasheets like this provide ratings, switching and capacitance data, curves and pinout. On the bench it helps confirm which leg is which before diode-mode measurements and supports choosing an alternative when the original cannot be sourced. Check the printed marking against the number, since short codes on small packages are easy to misread.
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.