10 watts in a XP die size? Better use Copper stars and then some. So, XM-L will be 20 watts? But maybe by them they will figure out how to hold the CRI. I wish Nichia would step up and make a larger die 90 CRI led.
Gree will have to call it something else. What's the next letter in line? XR-S or XR-T? Time for the Chinese flashlight manufacturers to step up and make some better heat sinking in ALL their lights.
Based on my calculations I see XM-L2 as having a 3mm by 3mm die, XP-L a 2.7mm by 2.7mm die and XP-G2 at 2mm by 2mm. I resized photos of each LED to they real size and measured the die by referencing the overall size of the LED.
I am talking about the die, not the footprint which the XP-L share the same with the rest of the XP family.
EDIT: I do not think one can rely 100% on the photos as the dome distorts the size of the die in comparison with the overall dimension of the footprint.
Oh Ya, that's wut I'm talk'n bout - I don't care bout the dye, but the mounting is the important part. Triple Noctigons!! Well.. maybe the dye does make a difference with focusing, beam patterns, de-dome effects, etc...
I guess you mean the surface area covered in phosphor that emits light? The relevant bit to throw improvements? I had assumed we were talking about which mcpcbs would suit, my bad.
it’s all speculation to this point. possibly removed from the datasheet on purpose to hide variance/future changes
given the cree ‘HD’ trend of xp-e -> xq-e, xp-g -> xb-h though it would make sense the xp-l is the same die size as xm-l (2x2mm)
should provide an interesting test of thermal coupling between the xm and xp packages at the very least!
Having a xp-size thermal pad, the XP-L can expect to handle heat somewhat worse than the XM-L2, at high current. But only testing that will give the real answer.