Re: Maximum current rating for blue led?

Daniel Morrow wrote: 
I want to buy some blue leds from digikey (haven't heard back from them yet
about this) and their catalog doesn't list the maximum current rating for
any of the leds they carry, the catalog only lists the maximum voltage
rating. How can I find out the maximum current rating without trial and
error for each individual led and without a risky potentiometer/multitester
method? I need to know the maximum current rating of these blue leds so I
can use the proper resistor with the leds so that the leds do not get
damaged. Thanks a mil!


Maybe you can help me. I have seen your question, or a variation
quite often.  Personally, I am too chicken to run a LED at or
near its maximum current, except experimentally.  What benefit
do you see to running a blue LED near its max? Or is it a question
of finding the max, so that you can run it well below that?

So far (again, aside from experimenting) I have seen no
advantage to running LEDs "hard" (for lack of a better term).
I figure 10 mA (or less) as the design figure, unless there
is a specific reason to go over that.  That's not a reccomendation,
it's just to give you the background behind my question.

Ed
.

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