New XR-E has smaller die?

[saabluster]

Can they change the die and still call it an XR-E?

No. I even went to Crees website to see if the dies data sheets have been updated recently. Nothing.

I want to see good macros and some macro profile shots. This one has my head spinning.:thinking: :shrug:

 

[znomit]

No. I even went to Crees website to see if the dies data sheets have been updated recently. Nothing.

Yes but do they have a die size listed on the data sheet? I couldn't see one.
They do chart "Typical Spatial Distribution" so any die change would need to mimic that. I guess they could change the dome as well... but then it would still look the same size.
:thinking:

 

[saabluster]

Yes but do they have a die size listed on the data sheet? I couldn't see one.
They do chart "Typical Spatial Distribution" so any die change would need to mimic that. I guess they could change the dome as well... but then it would still look the same size.
:thinking:

You have to look at the die's data sheet. The 1000 is the XR-E and the 700 is the XR-C.


EZ1000 LED Specifications
EZ700 LED Specifications

 

[znomit]

I can't see the EZ1000 listed anywhere on the XR-E datasheets.

 

[saabluster]

I can't see the EZ1000 listed anywhere on the XR-E datasheets.

You just have to know these things.:nana:

 

[znomit]

You just have to know these things.:nana:

lol!

Yes I do know it, but if its not in the datasheet cree can change it!
I do think thats very unlikely though.

 

[saabluster]

I do think thats very unlikely though.

Agreed.

 

[Marduke]

But what constitutes a change? They change small things all the time. Materials, production methods, etc. If they meet some short list of delivery specs, they can call it the same.

 

[Illum]

I suspect it has something to do with the newer XP-E and XP-G series.

well now, since Marduke agrees I don't think pics would be more convincing:naughty:

the XP series do not have the same LED package as the XR series even though both uses the same die format. Does the orange frame resemble possibly a copper shim of sorts on the LED base between the die and slug?

 

[Marduke]

It is not a shim. It appears to be electroplated. Or it was there to begin with and the die covered it up fully.

Looking at it under a jewelers loop, the more ragged edge of the phosphor at the edge of the die gave me another thought.

So far they have only been seen on very cheap lights. What if these are the first fake Cree's?

 

[moviles]

left:cree XR E chip ez900 bin q5 (0.88mm)---right cree XR E chip ez1000 bin q5(0.98mm)

chip ez900 (0.88mm):
http://www.cree.com/products/pdf/CPR3DX.pdf
chip ez1000 (0.98mm):
http://www.cree.com/products/pdf/CPR3CR.pdf

 

[ergotelis]

Well nice find moviles this seems to explain the mystery!

 

[Marduke]

Well that answers that.

 

[bshanahan14rulz]

So this now means that we have a way to at least make a more educated guess on the flux bin of a given LED by appearance! :twothumbs

On a slightly sadder note, both "R2" are Q5? meh, at least not p4....;)

And word of warning, these are the DX dropin that comes with the ultrafire C1 and the DX R2 single mode dropin (smaller one)

Edit: after looking at the datasheets, the smaller die ez900 is a generation 2 die, and has higher average radiant fluxes (fluxi?) than the ex1000. Does this mean it should theoretically be brighter? Moviles, how did you figure out Q5? is there a calculation involved to convert something to lumens?

 

[saabluster]

right :cree XR E chip ez900 bin q5 (0.88mm)---left cree XR E chip ez1000 bin q5(0.98mm)

chip ez900 (0.88mm):
http://www.cree.com/products/pdf/CPR3DX.pdf
chip ez1000 (0.98mm):
http://www.cree.com/products/pdf/CPR3CR.pdf

Great job moviles! I can't believe I missed that. Those sneaky devils.

So this now means that we have a way to at least make a more educated guess on the flux bin of a given LED by appearance! :twothumbs

On a slightly sadder note, both "R2" are Q5? meh, at least not p4....;)

And word of warning, these are the DX dropin that comes with the ultrafire C1 and the DX R2 single mode dropin (smaller one)

Edit: after looking at the datasheets, the smaller die ez900 is a generation 2 die, and has higher average radiant fluxes (fluxi?) than the ex1000. Does this mean it should theoretically be brighter? Moviles, how did you figure out Q5? is there a calculation involved to convert something to lumens?

You still cannot tell bin by looking at it. I'm sure he says they are Q5 because that is the bin he bought.

I am very glad to see this. I was worried with all the development around larger and larger dies that they would stop working on flux density. This does not appear to be true since the new smaller dies appear to be even more powerful.:party:This is good for throwers.

 

[saabluster]

There is some interesting stuff looking at the data sheet. The new die not surprisingly are going to be more averse to being highly overdriven. It has some changes in the technology used in the die which helps increase output but there is no getting around the fact that the die is smaller and with less area to conduct heat away from the die it will have a hard time handling the insane amounts of current the ez1000 die could in this package. I think I have even taken the XR-E up to 3A before without it blowing. But with the higher output it may not be necessary to overdrive as much to reach the same output. We should be seeing R3 XR-Es soon I would imagine if this die is already being seen in the wild.

 

[bshanahan14rulz]

Yeah, Saa, but who cares about throwers? Well, maybe that guy who makes those DEFT thingamabobs...

 

[saabluster]

Yeah, Saa, but who cares about throwers? Well, maybe that guy who makes those DEFT thingamabobs...

:twak::p

 

[bshanahan14rulz]

Saa, you should find one of these and do a side by side w/ DEFT! :whistle:
Well, if you have time

I'm just sayin....

 

[znomit]

chip ez900 (0.88mm):
http://www.cree.com/products/pdf/CPR3DX.pdf

Nice find. lovecpf

I can't actually find a link to that page anywhere though :shrug:

Is it new? Is it old?