I am most curious, and perhaps someone can answer. You mention that the
white LED might fail within a 2x magnitude of 100k hours. 100k hours is
about 11.4 years. How is MTBF estimated or calculated? I don't think
they light an LED at its recommended current and wait - white LEDs
haven't been around that many years.
I've bought many of those 100 LED collections off ebay, some with a
clear lens, others with the phosphor. In my case they are primarily for
hobbyist use so gradual failure isn't as big a concern for me.
Joe
Apptech wrote:
> Getting White LEDs with long lifetimes is easy. Getting them
> at a low cost is another matter.
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