PDF datasheet covering the 1N4148 and 1N4448 fast switching diodes, filed in the schematic section of the index. The trailing 4 in the name probably marks a document revision but is not explained. At 58.8 KB it is a compact sheet readable in any PDF viewer. Both parts are common glass-package signal diodes; the sheet helps compare forward voltage and recovery characteristics, confirm cathode band orientation and judge whether a substitute will behave correctly in clamping, logic or protection circuits.
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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