Datasheet PDF for the 2SK1058, a 55 KB file. This part number belongs to the 2SK series of N-channel field-effect transistors and is widely known from audio power amplifier output stages. The name states nothing beyond the part number. The sheet is useful for pin identification, maximum ratings and pairing details when replacing output devices. Opens in any PDF reader. When servicing an amplifier, check the complementary partner and bias settings described in the documentation before powering the repaired board.
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.