Datasheet for a red 10 mm through-hole LED in a 517 KB PDF. The name lists no maker or part code, so the exact series has to be read from the document itself. It usually gives forward voltage, maximum continuous and peak current, luminous intensity, viewing angle and mechanical drawing. Red LEDs have a lower forward voltage than green or blue ones, so recalculate the series resistor when substituting colours. The drawing also shows how to identify the cathode lead.
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 @datasheet. Enginerys does not host this file.
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