SBT-70 question

Flashlight Modding and DIY Parts
1

I’m looking at modding my SR90, now a dedomed SR90, with a SBT-70 LED. Mouser sells them, on back order it appears for a short time, but I cannot figure out which one to get. I for sure want the cool white, so the 7k version is the answer there. The best bin choice is the NA bin which offers up to 1790 lumens at the emitter. But what has me stumped is the NA120 vs the NA123 choices. Both are cool white, 7k, NA bin, but $13 difference in price. Reading Mousers and Luminous’s data, I just don’t see where they specify the difference between the two. So can some body help me out here and see what I’m missing?
Also if anybody knows of another seller that has them in stock, please post a name or link.
Here is Mousers and Luminous links -
http://www.mouser.com/Search/CompareProducts.aspx

http://www.mouser.com/ds/2/245/PDS-002014_Rev%200X_SBT-70%20Production%20Specification-195362.pdf

2

According to this doc: http://www.luminus.com/products/PDS-002041_Rev01_SBT-70_BinningLabeling.pdf

On page 4 the last 3 digits are the Wavelength / Chromaticity bin. Now, look at page 9 - even though they are showing PA and PB codes, the 120 is a crap shoot, where the 123 is C1 or C2, for both PA and PB. I think from interpreting this, you would want the 123 to guarantee the whitest level, but I'm not totally sure of this.

Oh - DigiKey has them listed a lot cheaper ($22 - $32) but you have to buy 25, and no stock .

3

Thanks Tom. Only thing now is with your added link, new Bins have been added to the equation. PA and PB. Both much higher output than what I thought was the higher bin NA. Not sure if Mouser has these Bins though.
Gotta keep researching.