Datasheet-type PDF of 48.3 KB for the part 10YQ045C, listed in the schematic category. The trailing C suffix denotes a specific package or configuration variant, which should be explained inside; the document is the same size as the plain 10YQ045 file. The naming follows the International Rectifier pattern. A technician would read ratings, pinout and the mechanical drawing to source an equivalent part and confirm that the suffix printed on the faulty device matches.
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.