Do XR-C and XP-C share the same die size?..and more???

[coors]

I'm trying to determine if these two Cree emitters share the same die. Also, can someone tell me what the die size is for each of these emitters?

 

[znomit]

Re: Do XR-C and XP-C share the same die size?

I'm trying to determine if these two Cree emitters share the same die. Also, can someone tell me what the die size is for each of these emitters?

Yes, same die.
I believe they are 0.7x0.7mm(cant find a ref)

Note picture pinched from Cutter.com.au, posted on this thread
http://www.candlepowerforums.com/vb/showthread.php?t=268463

 

[coors]

Re: Do XR-C and XP-C share the same die size?

Thank you, very much, znomit!:twothumbs

 

[coors]

I have some more XR-C/XP-C questions
Does anyone know if it would be okay to push the 500ma current limit, for either of these emitters, to 700ma, given adequate heatsinking? That would work out exactly to a 28% increase in current, which is exactly the same percentage increase of running a 1amp XR-E at 1.4amps.
Also, concerning the XR-C, I remember a thread of saabluster's where he ground down the back of an XR-E, to get a better thermal path to the heatsinking (I haven't found that thread again, yet.) Would anyone know if the same thing would work on the XR-C, as well?

 

[LEDninja]

Re: Do XR-C and XP-C share the same die size?

Yes, same die.
I believe they are 0.7x0.7mm(cant find a ref)

From the picture (The traces on top of the LED die).

The die is either an EZ600
http://www.cree.com/products/pdf/CPR3EE.pdf

or an EZ700
http://www.cree.com/products/pdf/CPR3DW.pdf

 

[coors]

Looks like these 2x emmitter's 500ma max current rating falls squarely between the EZ600's DC forward current (400ma) and the Peak forward current (600ma.) Does that mean the dies in the XR-C and XP-C are EZ600 ?
If so, then which, if any, emitters use the EZ700 die ? And thanks for sharing this info, LEDninja !

Update: I found that the Cree MPL emitter uses the EZ700 die

 

[saabluster]

I remember a thread of saabluster's where he ground down the back of an XR-E, to get a better thermal path to the heatsinking (I haven't found that thread again, yet.) Would anyone know if the same thing would work on the XR-C, as well?

Here you go. It should work just fine on the XR-C as well.

 

[coors]

Thanks, a whole lot, saabluster! I have read the entire thread, again, now I will see what I can learn from hands on.