What improvements have been made to the XHP70.3?
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
Interesting update, just when I bought a bunch of new Cree LEDs!
Any idea when the datasheet will be available for the XHP50.3?
Parts are due for release around late May/June so expect data available in May,
Thanks
Hoping for less tint shift but not holding my breath! Domeless 50 has to be worth something at least.
XHP50.3 HI…Interesting…I thought it said XHP35 when I first read it. Let’s hope it has a good beam profile.
Getting close to these yet? Any updates?
Datasheet on line at
https://www.cutter.com.au/product-category/led-emitter/cree-led/cree-xlamp/cree-xhp/cree-xhp50/
cheers
Mark
Please let the xhp50.3 come in cct under 6000k!!
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?.
Do you mean the 3V version perhaps ? because the normal 6V/12V version can be found in CCT under 6000K, for example : https://www.mouser.fr/Optoelectronics/\_/N-5g5vZ1yzvvqx?Keyword=xhp50b&FS=True
They have 2700, 3000, 4000, 4500, 5700. The 4500K, one of the 3000 and 5700 are even 90CRI.
And the 3V versions (sofar? at least as mentioned in the datasheet) are only with dome and cool white, just like the XHP50.2
I don’t see it on that page…
Link is on the second banner.
Ah, I see. Thx.
Highlights of 50.2 vs. 50.3 differences:
- Much better thermal resistance (1.2 K/W vs 0.4 K/W)
- Vf is slightly more stable when temperature changes. Coupled with the thermal resistance improvement, this is really going to be quite stable.
- Same max current. Weird.
- There are higher bins available, in general we can expect to get 1-2 bins up
- XHP50.3 HI as about as efficient as XHP50.2 HD
- XHP50.3 HI is available down to 3000K and up to 90 CRI, but you can’t have them both. The lowest CCT with CR>70 is 4000K.
- XHP50.3 has slightly higher Vf (2.97 vs 2.9 at 6A).
In ANSI bins (pages 15-17) yes, but in Easywhite bins they are listed with 90CRI down to 2700K (pages 12-14)
Right! That’s a very good news. 
XHP70.3 datasheet
https://www.cutter.com.au/product-category/led-emitter/cree-led/cree-xlamp/cree-xhp/cree-xhp70/
Comparing XHP70.3 with 70.2 I see:
- 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°.
Thank you welight for these datasheets!