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
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).
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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.
HTH
Reinhard
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
1N4148.-- W "Some people are alive only because it is illegal to kill them." . | ,. w , \|/ \|/ Perna condita delenda est ---^----^---------------------------------------------------------------
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