A 119 KB datasheet in PDF format bearing only the document code SDZS012, one of a numbered series of similar files. The name does not state the part number, brand or device category, so its content has to be confirmed by opening it. Repair use of such a reference centres on reading the pinout, operating conditions and suggested application circuit to judge whether a component and its surroundings behave correctly. Cross-check the part marking on the PCB with the document before trusting its figures.
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 @datasheet_technar_org. 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.