PDF datasheet for the 42CTQ030L, 96.1 KB, listed in the schematic category. The CTQ naming fits a dual Schottky rectifier series with common cathode, and the 030 portion typically reflects a low reverse voltage rating in that family, with L marking a package or variant option. Use the document to confirm pinout, forward voltage and thermal limits when diagnosing a failed rectifier in a switching supply, and compare the exact part marking before swapping in a replacement from another vendor.
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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