Cree xr-e vs xp-e royal blue leds

[Xgame2k]

What's the difference?

 

[der_wille_zur_macht]

XP-E has a wider viewing angle, smaller physical size (doesn't matter if you're buying them on stars), teeeeeeeeeeny tiny bit smaller Vf.

Also, optics are specific to the package, so optic choices are a bit different.

In theory the XR-E is available in a higher bin, but I've never seen them available. For the bins you typically get, efficacy is the same.

 

[Xgame2k]

I still cant find a place that has the xr-e royal blue d16 and it is not listed on the cree website.

 

[s15ago15]

cutter has the xp-e royal blue d16's

 

[Xgame2k]

but is there even a cree d16 xr-e royal blue?

 

[der_wille_zur_macht]

FWIW the brightness bins for RB don't include the D, they are just indicated via two digit numbers (14, 15, etc.).

The XP-family binning and labeling guide lists up to a 15 bin for royal blue, with a radiant flux of 425 - 500 mW:

http://www.cree.com/products/pdf/XLampXP_B&L.pdf

The XR-E guide lists up to a 16 bin (500 - 600 mW):

http://www.cree.com/products/pdf/XLamp7090XR-E_B&L.pdf


Cutter currently doesn't list any RB XP-E in stock (dropdown under "Cree XPE Colour LEDs):

http://www.cutter.com.au/products.php?cat=Cree+XPE

I do not believe that a 16-bin XP-E exists, but it appears from Cree's docs linked above that there is a 16-bin XR-E. Though, I don't recall ever seeing it offered for sale.

 

[s15ago15]

Please use drop down box to select XPE by Colour and bin: - XPEROY-L1-D40-16-0-01 min 500mw Royal Blue 0.75 27.00
Select here for PCB for XPE/XPC/XPG to be mounted on: - 20mm Star MCPCB 0.75 27.00
Price Break for Volume Purchase: - 25-49

ordered the 16 bin from cutter thursday

 

[der_wille_zur_macht]

Edit - nevermind. You are correct, they have them now. Last time I checked, there were no RB choices in the dropdown - their stock changes pretty regularly.

 

[Xgame2k]

So what's the difference between the xpe's and xre's? (im getting tired of looking through other threads to find the answers, sorry) And would the xpe 16's be better than the xre 16?

 

[der_wille_zur_macht]

So what's the difference between the xpe's and xre's? (im getting tired of looking through other threads to find the answers, sorry) And would the xpe 16's be better than the xre 15?

XP-E has a wider viewing angle, smaller physical size (doesn't matter if you're buying them on stars), teeeeeeeeeeny tiny bit smaller Vf.

Also, optics are specific to the package, so optic choices are a bit different.

Effectively, they're different sizes, which doesn't matter, because you're buying them both on standard star MCPCBs. Also, the XP-E has a wider default viewing angle - without optics, it's light is more spread out.

Really, it doesn't matter. Just buy the one you can get for the lowest price. As long as they are the same bin, you're essentially getting the same light output. If you have bin choices, get the highest bin you can for your budget, regardless of which model it is.

The only exception I can think of would be if you had really specific optics requirements. Since they are different packages, they require unique optics - and the choices aren't always 100% the same.

 

[Xgame2k]

Ha. All this electrical talk made me forget what I started this thread about.

It's going to be the same setup and tank as fstar25. The tank is L 20.8 x W 19 x H 20.1.

 

[Xgame2k]

...

 

[der_wille_zur_macht]

Do you have an optic preference? If not, shop around and just get whichever one gives you the best value in terms of dollar for the bin you're getting.

 

[therman]

And for ease of assembly, XR-E optics are friction fit, and the XP-E optics need to be glued on. I had to carve all the XP-G optics I used with a scalpel because they conflicted with the solder connection on most of mine...made me wish I'd used all XR-Es when I was doing it.

 

[Xgame2k]

Do you have an optic preference? If not, shop around and just get whichever one gives you the best value in terms of dollar for the bin you're getting.

As long as there is no spotlighting. The lights are going to be pretty close to the water. I think I will go with the xre if I can find the 16 but if not, the xpe 16 would be better correct?