GB 351D closed.

I’m interested.

F2T7Q2 bin. T7 refers to the chromaticity coordinates, about over if slightly below the blackbody locus, and a tad less than 4000K. Shouldn't look greenish at all.

Cheers ^:)

These leds were temorarily out of stock.
Now I have small bunch of them 49pcs to study interest.
As I already said 1.6$/pcs. 5$ registred post. Write PM if you are interested.

That T7 color bin looks like it sits very close to cree’s 5A2, which has been my favorite tint so far, I’ll definitely have to try some of these.

maukka, are you going to test these? :slight_smile:

Received my 3x LH351D today. Installed them inside a Wuben TO46R. They’re really nice. No tint shift to speak of in the clear triple optics. A simple filter will perfect the tint on most modes if you need to be on the BBL. On higher currents it’s already superb.

And what’s amazing. It offers Nichia like beam quality but reaches output comparable to the XP-G3. I measured equal lumens before and after the swap. Although one of the original XP-G3s was dedomed so didn’t probably live to its true potential.

Very nice, I should be getting some soon, I’m planning to put them behind frosted optics in an E2L host

I received my 6LH251’s yesterday.No time to do anything at the moment.Thanks AEDe.
Looks good Mauka.

Is it the same output with regulated driver or with FET?

Thanks Maukka!! I appreciate it.

They are XP-L sized. I think they should be compared to the XP-L2 90CRI 4000K 2-Step, which is very efficient, but has a terrible tint (Duv 0.6 in the low/mid modes with reflector - SC64c). So this LED is indeed much better, similar to the Nichia 219C 4000K R9050 (which has a somewhat yellow tint though). At high currents it is probably noticeably brighter than the 219C R9050.

EDIT: I just checked the datasheet. At 3A the Vf is only 3.28V and the thermal resistance is 2.2°C/W. So it’s actually quite compareable to other XP-L sized LEDs. 765-810lm @3A & 85°C. 77-82lm/W, so definitely worse than the XP-L2 in that regard, but only because of the used Bin.

EDIT2: I just compared these measurements to those of the Nichia 219C 4000K R9050 403. The Samsung LED has a higher TM-30-15 Rf & Rg, a higher R9-value and a more balanced spectrum. The Duv ist very similar (unfortunately…).

How many of them still available? I may order a bunch next week.

Cheers :-)

Played with Lee Zircon minus green filters. The results are promising and visually the light is gorgeous. It really makes every color pop, even over saturate (Rg 102). I think I’ll stick with the 804.

With 803 minus green and 17% output loss:

804 minus green and 15% loss:

805 minus green and 11% loss:

Thanks, maukka for the tests.

Now I have left only 23pcs of 351D and 4 people send me PM

I’ll send these 23pcs. Then I’ll order more 351 in a week(+3 days to get it).
So please express your interest in this thread, I’ll make a list.
Small discout for orders >20pcs - 1.5$/pcs

Thanks for the measurements! I have a sheet of 804 at home, as soon as these arrive I’ll make good use of it. By the way, does anybody know where to get some good optical glue?

I’m interested in a few myself.

Deleted, sory if it’s important. But you should delete it yourself too)


Also thank you for offering these in low quantities for such low prices!

Actually I simply found strange good shop in nearby with extremely low price where “wholesale” means >35$ ))\_t&hl=ru&ie=UTF-8&


So if someone will be interested in something else (not 351D) it is posible to order too.

Well, still, you’re doing the work ;).

Thats interesting. Is there a version of this LED with a smaller (1mm^2) die, like the Cree XP-E and Nichia NCSL219B?

Yes 351B max current is 1.5A.
There is also 351C max current 2A. But I dont know chip dimensions.