Vishay datasheet for the Si7121ADN, a P-channel MOSFET in the PowerPAK 1212-8 package, provided as a 634 KB PDF. It details the drain-source rating, on-resistance at different gate drives, switching data and mechanical outline. P-channel devices like this are typical in power-path selection and load switching on portable equipment. The sheet helps you confirm orientation and pin roles while probing and judge whether a substitute will cope with the current involved.
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.
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