Diode colour coding

I sometimes see (through-hole) diodes with colour coded bars instead of type numbers printed on; there obviously aren't enough lines to give a full part number (and I'm not sure if I have 812 or 218 anyway). I guess several different types of diodes (perhaps in different cases/made by different companies) might have the same colours because of the limited space for lines. How do I find out the part number of such diodes? Is there a website??

Thanks, Mark A

Reply to
Mark Aitchison
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I think that on any colour-coded diodes I have seen, the colour bands give the numeric part of the diode number. For example, a 1N914 would be marked white, brown, yellow (914).

Peter Bennett, VE7CEI  Vancouver BC, Canada
peterbb4 (at) interchange.ubc.ca  
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Peter Bennett

Mark Aitchison schrieb:

As to my experience the "most significant bar/ring" is wider than the other bars/rings. E.g. a (1N)4448 diode would be marked as follows: yellow (wide) / yellow (small) / yellow (small) / grey (small). At the same time the wide bar/ring marks the cathode pin.



Reply to
Reinhard Zwirner

Read the stripes the same way you'd read resistors, then stick '1N' on the front. For example, yellow, brown, yellow, grey (4148) is a

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