An 82.7 KB PDF for the 2SK1729 N-channel FET, the 2SK code following the Japanese semiconductor naming convention. The file name carries only the part number, with no manufacturer or package given. Such a sheet is handy at the bench for identifying gate, drain and source when testing with a multimeter in diode mode, for reading maximum ratings, and for locating an equivalent when the original is obsolete. Confirm the printed marking on the device matches before relying on the figures.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.