Filed under schematics, this 196 KB PDF called 88cnq060a is most likely a datasheet revision for a dual common-cathode Schottky rectifier, where 060 usually marks a 60 V reverse rating. No manufacturer appears in the name, and a plain 88cnq060 version is also indexed. Repair technicians use it for forward voltage, current and thermal limits plus the package outline when checking a shorted rectifier in an SMPS output stage. Confirm the marking on the diode and compare both editions if values differ.
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.