Datasheet-type PDF for 5HN01N, approximately 27 KB. Only the component code appears in the name, with no board, brand or revision; the N likely signals a package option. Expect pinout, electrical characteristics and an outline drawing. During repair this helps interpret diode-mode measurements across a suspect part and choose a replacement that fits the pads and ratings. Any PDF viewer opens it; verify the physical package matches the drawing before soldering.
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.