Update (Hank answered):
We only buy sealed reels directly from CREE, and there is no 1A or other LED you said in stock.
Those S4 2B LED that the customers received could be from different reels
since we always have fresh stock every month.
2B as you know on the ANSI white chart allows some variability on both axis,
so CREE does not guarantee an absolute tint
even if it is called 2B, even us we rate it as variable 5700-6100K,
which is only the variability of the X axis, then there is the variability on the Y axis.
That being said, we do not guarantee any tint shift/different for the dedomed LEDs.
Brightness output and forward voltage are under certain tolerances also, they vary slightly.
As for your doubt of lower bin LED, I would suggest you to send random 2 pcs domed/intact S4 2B LED to Djozz
for testing, and compare with his result, if the result is not in the range of the tolerance
that CREE stated, then we would agree there is some “problem” there.
Otherwise, there is no proof to it.
Regards.
Hank
My answer:
Hank there is no doubt in lower performance and tint shift at all. They under-perform for more than 30%
As I said I can chew green tint but I can’t chew lower performance.
I will send them all to Djozz if he will agree cause they have no use to me.
I want to ask you one more question here…
Do you exclude possibility of your or your worker mistake? I mean is it possible you send me wrong XP-G2?
So Djozz do you agree with this Hank suggestion? I’ll sent you rest of them (about 15 pcs) for free and you never and ever need return it to me.