FW3A, a TLF/BLF EDC flashlight - SST-20 available, coupon codes public

Well Put. I couldnā€™t come up with anything that kind.

Yeah no. The FW3A will be staying as an 18650 light. I want it to stay small :slight_smile:

ā€¦well, you could take out the inner tube and replace it with a thin strip of Nickel or copperā€¦??

:smiley: ā€¦ Thank you, I know what you mean. :+1:
I had to work at it to keep it ā€œkindā€. :wink:

Interest list updated again in post #4.


- TK

Interested in one LH351D 4000K 90CRI :face_with_monocle:

In the TLF I have registered (Leo) for 4 pieces LH351D. To be on the safe side I would like to do it here, too.

ok sign me up for 1 x LH351D 4000K 90CRI .

I think I have two on the list, please add me for 2 more. Thanks

In TLF I have registered one FW3A (219.Meyer on the TLF-list) and opted for a second one. To be on the safe side please put me on the BLF-list with one XPL-HI 3D and one LH351D.
Thanks

Got a message back from Digikey again. And good news!

Great for the FW3A groupbuy, but not too great for smaller buyers.

For individual samples(less than a reel), the tint bins are randomly available from T6, TA, T7 and TB. No wonder the LH351D from Bob Mc Bob looked so green.

For a 1x reel LH351D (like our groupbuy), the only tint bin confirmed and available is T6, so way better than the 2nd and 3rd batch of LH351Ds, so about as good as the 1st batch from AEDe, but still not the godly T2/T4 bin.

HOWEVER, for 4x reels of LH351Ds, the tint bins are confirmed and available in the T4 and T6 bin, and the T4 bin is way below the BBL and closer to 3900-4000k rather than 4100k-4000k according to the Digi-Key rep. That is very good.

Yeah itā€™s really nice.

Thereā€™s an other advantage taking 4 reels rather than one.

Look:

1 reel order bin: F2T4*Q2*
4 reel order bin: F2T6*R2*

So not only are we getting a below BBL tint, we are getting one flux bin higher by going from Q2 to R2.

Glad to hear this information! I hope Lumintop is able to make use of your research.

From the latest list update: 1715 lights x 3 emitters / light = 5145 emitters.

My understanding is these are sold in 800 piece reels, or in 4 reel cases (3200 pieces).

If Lumintop are willing plan on half of buyers going for the LH351D, plus a modest number of additional sales beyond the group buy, then ordering a case should be justifiable.

I will take one. Thanks for doing this!

Iā€™m not sure the Digi-Key rep got the color temp for T4 quite right. Looking at the datasheet and trying to scale the chart on page 10, hereā€™s how I read it:

  • T6 should be 4000K to 4125K, and Duv roughly +.002 to -.004
  • T4 should be 3750K to 3875K, and Duv roughly .004 to.010.

It looks like there could be a choice to make between rosier tint at a warmer color temperature versus a color temperature with broader appeal plus 20 lumens and a chance of just enough of a greenish tint that discerning users might notice.

As a related reminder, Maukka seemed pretty happy with a Carclo triple-equipped light he modded with LH351Dā€™s (TC bin?) that measured at +.0036 Duv (assuming ā€œmediumā€ is the closest condition to the binning conditions of 1050mA).

Yeah she was probably wrong in the color temp department.

Itā€™s funny though that we got a warmer tint bin with a higher flux bin. That was surprising.

Edit: I was the one who was wrong. Transcribed badly on my part.

BlueSwordM, thank you so much for taking the initiative on this! If this works out, we are truly in your debt.

^ . :+1:

2 weeks ago when ToyKepper proposed 3 choices, the deal was to wait for a better (rosier) tin bin T1, T2, T3, T4. It was not to wait for the greenish T6. :weary: