Originally Posted by vrkelley
Sounds like gem-sorting. Are those quality issues then? If so, as a shopper, how can you know what you're actually getting?
You download the datasheet from Lumileds that has the binning chart, and then choose the bin codes that are acceptable to you. You can buy them all over the place, and at many online places that sell other LEDs, but you don't want to buy Luxeons without knowing the bin code.