An uninformative name, 80CNQ, labels this 124 KB PDF filed among schematics. Without a suffix the file probably covers a whole component family rather than one rating, with a table of voltage variants sharing the same package. Expect pin assignment, absolute maximum values and thermal data instead of a board circuit. A technician would consult it to confirm which pins are common and what reverse voltage a given variant tolerates when replacing a failed part in a supply. Check the exact part marking against the variant table.
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.