Datasheet in PDF form, 162 KB, covering the 43CTQ080 part, catalogued here as a schematic. Parts in the CTQ series are commonly dual Schottky rectifiers with a shared cathode, used on the output side of switching power supplies. Reading the absolute maximum ratings, forward drop curves and the TO-220 pin assignment helps when checking a shorted rectifier, confirming which leg is the common cathode and picking a part with equal or better voltage and current ratings as a substitute.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.