I would say that these Luxeons are easier to driver than Cree XHP LEDs except for the cool-only XHP50.2 3V.
Footprint is one of standards. Though clearly less popular than 5050, there are several MCPCB sources.
And there are several LED sources as well.
Unpopular? I would guess that the price is the main reason.
I agree with you Agro. The MZ is one I missed on my list, as it’s 3V and 4040, which is recently becoming a standard footprint with DTP boards available from many sources.
I’m not really saying there is nothing else out there, just that by far Cree had the lions share of sub 5000K, >2000 lumen emitters in flashlights for as long as they existed, and I’m glad to see them coming out with new and potentially relevant products
the biggest disappointment of my flashlight adventure yet is the awesomeness in power of the xhp50.2 and the torture that it is almost impossible it find i. 5700k, but more than that, it isn't made in anything below 5700k! With the xpl-hi 5d and 5A being so perfect, why can't their xhp50 be made with these cct?.
Much lower thermal resistance (0.2K/W vs 0.7 K/W). I also note that now they measure according to a JEDEC standard. XHP70.2 datasheet doesn’t mention that, so measurement methods might be different and so - the numbers might not be directly comparable
Vf changes a little less with temperature and is marginally higher
Again I see that these tend to have 1 bin up
Light emission is slightly narrower, FWHM is 120° rather than 125°.