A compact 44.5 KB PDF named 20FQ appears in the schematic category with no device or board information in its name. It is closely related by name to a 21FQ file, which suggests a series of parts with different ratings. Open it in any PDF reader to check the scope. A sheet this small usually holds pinout, package drawings and maximum ratings, which are useful for checking a part with a meter or picking a replacement. Make sure the series and suffix on the part match the document.
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.