PDF datasheet with the document code DS9045-05, a 175 KB file whose name gives no device, part number or manufacturer, so open it to see which component it covers. Datasheets like this give pinouts, absolute maximum ratings, typical application circuits and package dimensions. Technicians use them to check expected voltages on each pin, find suitable substitutes and confirm the marking code of a part removed from a board. Any PDF viewer will open it.
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 @ic_mosfet_pdf_datasheets. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)