Second copy of the 2SK3569 N-channel MOSFET datasheet, rated 600 V and 10 A according to the name, matching the other file at 156 KB in PDF format. The JIS 2SK designation marks it as an N-channel FET, and the sheet should list gate threshold, on-resistance, capacitances and package details. Repair technicians consult it when a switch-mode supply has a shorted primary transistor and a correct replacement is needed. Check the drain-source path for shorts, inspect surrounding components, and confirm the full part marking before fitting a substitute.
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.