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Murray atuptown Murray atuptown is offline
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Default How do they paint the stripes on resistors, bumble bee caps, etc?

Obsolete info, but you can download MIL-R11G from everyspec.com and look at paragraph 3.22. That will reference MIL-STD-1285, marking of electrical and electronic parts, also old info, but you have to start somewhere. Rev. B is the largest document so dont look at the tiny later updates as they are missing the bulk of the details.

This will tell you very little other than that they arent supposed to be smeared and maybe standards for colors. You may find other references to pursue, but there are many other interesting things in there.

Or you become overwhelmingly bored and start to appreciate why the elves get grumpy, sleepy, dopey, etc.

If you pay for premium resistors you get numbers instead of colors.