I have a 3W LED that the manufacture states that if I 'feed' it with 750mA it will 'live' 100,000 hours (Very good heat sink, mid ambient temperature, etc….).
Assuming this is correct and the manufacture knows what he is talking about, how will the lifespan of the LED be affected if I 'feed' it 800mA? 850mA? Will the lifespan will be shortened dramatically? Or 50mA isn't such a big deal?
I'm sure there is no straight answer but even a 'rule-of-thumb' will be good.
Thank you for your answer