More New Cree Goodness coming....

I miraculously have a 7135 working in my L6 but haven’t been able to replicate the experience in my SP70 - have blown a few, they all failed wide open interestingly. In the L6 the behavior is weird though, the 7135 channel is dimmer the higher the battery (input) voltage. Funny when fresh cells give a super-dim moonlight but when they’re low I can’t look directly at it anymore!

Poor little chip :cry:

Haha it will be a sad day when it quits on me!

Thanks for the advice i ended up using a razor blade, i tried to put one of the XHP50.3 HI in a C8 and i shorted it and killed the boost driver sigh. Its not a great design for flashlights those few extra mm on a normal MCPCB really help. My solder joints where really low but i put tape on the reflector to be safe and the solder undone the tape lol. I also had a really low LED gasket in place and thickish gauge wire. I will reflow the LED onto another MCPCB.

On another note first time i have bought brand name solder and its great, a hardware store here is selling Weller solder 100g 1mm thick for like $10, on par with what i would pay from China for no name stuff. The solder joint was so shiny amazing stuff lol.

Will the XHP70.3 allow flashlights to have better sustained brightness than the XHP70.2 ?

A newer generation of the same emitter family usually results in a modest increase in efficiency, so yes, though not necessarily enough to care about.

According to the datasheets when comparing, the .3 does a little better with heat - drops less voltage per degree C, and thermal resistance at the junction is a little lower. Probably not enough to be noticeable. The .3 is available in P4 bin though, getting more lumens for free (no extra amps or heat), but again, low, maybe about 7% bump from P2. The Vf hasn't changed, so it should work well with existing drivers.

The biggest reason for 70.2 lights not having sustained brightness is the driver design and overall flashlight design. Because the LED is capable of high amps, high output, it's usually pushed hard in the design.

Thanks. There are some XHP70.2 lights with good sustained brightness - Convoy M21C/D, Acebeam E70, Thrunite T2. Just interested to know if there will be any improvements with the XHP70.3.

Simon from Convoy has P4 3A binned xhp70.2. At least that’s what he told me, when I asked.

Where everybody talks about efficiency of .3, i’m more interested in having no ugly yellow corona around hotspot. That’s my sole interest in these emitters. Other specs cannot be worse than it was on previous gen.

Has anyone got their hands on one yet for a test to see how much better the tint shift is in the beam?

Comparative photo 50.2 and 50.3

https://ibb.co/Ht16XRt

http://beriled.biz/data/big/xhp50d*.jpg”:http://beriled.biz/data/big/xhp50d*(2).jpg

Anyone found a source for the xhp70.3? Why can’t we still get these leds in every store? It has been almost 6 months since the announcement.

Sitting in a container ship somewhere? Could be a dozen good reasons especially lately.

Just got an email from Mouser informing me that my order for XHP50.3 HI 4500K 90+CRI is being pushed to January.

XHP50.3 HI is in stock at KD. Link is here "http://kaidomain.com/Cree-XHP50_3-HI-White-6500K-LED-Emitter It will be interesting to compare with SFT40.

Linked corrected, and don’t forget that the XHP50.3 HI in the link is the 6v/12v version as opposed to 3v for the SFT40 but otherwise yes, it will be good to see how the XHP50.3 HI performs the way we use them :slight_smile:

The Cree XLamp XHP50.3 HD 6500k is also available. Not really my color temp. I guess I will keep on waiting for the xhp70.3 warm white to become available.

http://kaidomain.com/Cree-XLamp-XHP50_3-HD-18W-2320-Lumens-5050-Powerful-LED-Emitter?page=4

Mouser added several XHP50.3 HD on order, availability announced for February : https://www.mouser.fr/c/optoelectronics/led-lighting/led-emitters/high-power-leds-white/?q=xhp50d&normallystocked=y

I have noticed that 3V version is only 6200K. I was hoping to have choice of 5000K version but seem to be only available with special order like 50.2.