A 245 KB PDF for the part 30ctq080, placed in the schematic category, though the name follows a power diode numbering style. The CTQ form is commonly used for dual common-cathode Schottky rectifiers in a TO-220 package, but the name itself states no brand or device. Use it to check reverse voltage, forward current and drop, and pinout. That helps when testing output rectifiers in switching supplies or choosing a replacement. Confirm the marking on the faulty part first.
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.