PDF of about 158 KB named 8TQ, filed as a schematic. In International Rectifier and Vishay numbering the TQ family denotes Schottky rectifiers, and a series-level name like this suggests one datasheet covering several voltage grades. Look for a table of variants, maximum ratings, forward drop curves and the package outline. Technicians use it to read the limits of a Schottky diode in a power supply output and to pick an equivalent. Match the full part number on the component to the correct row before ordering.
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.