LUMINUS SST-20 3500K 95+ CRI LED EMITTERS [GROUP BUY]

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azhu
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LUMINUS SST-20 3500K 95+ CRI LED EMITTERS [GROUP BUY]

I’ve been hunting these 3500k emitters for a little while now and have finally managed to find a source.
Unfortunately, there is a minimum order of 500 pieces to make this happen which is why I’m trying to pool together a group-buy.

I’ve been using the 3000k version for a little while now and really love it. They are 3535 XP sized so it has many applications.
CRI is very high and it’s brighter and tighter than the Nichia 219b. Throw is comparable to the XP-L Hi.

Please let me know if you are interested and how many pieces you would like. Pricing will be $1.75 each plus $5 shipping to US50. International will be extra.

SST-20-W35H-A120-J4352
https://download.luminus.com/datasheets/Luminus_SST-20-WxH_Datasheet.pdf

Emitter comparison:

Beam shot comparison. BLF-A6 lights with a 3000K SST-20 on left and a 5A 4000K XP-L HI on right at the same drive currents.

01: ### pcs – djozz
02: 013 pcs – g_damian
03: ### pcs – BlueSwordM
04: 010 pcs – HONDARIDER
05: 006 pcs – Slim Pickens
06: 040 pcs – SKV89
07: 010 pcs – Slayer1
08: 012 pcs – JaredM
09: 025 pcs – Thetasigma
10: 010 pcs – dmsoule
11: 010 pcs – tekwyzrd
12: 008 pcs – aswang
13:
14:
15:
16:
17:
18:
19:
20:

Hi, my name is Andy and I’m a flashlight fanatic.

Edited by: azhu on 12/12/2018 - 11:04
Bob_McBob
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Any idea about tint bin for the batch?

azhu
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Bob_McBob wrote:
Any idea about tint bin for the batch?

Part number is for the tighter grouping closest to the BBL but I’m unable to specify the bin. I have a 4000k sst-20 that’s slightly above BBL and don’t notice too bad of a tint shift. Fingers crossed for some slightly rosy ones.

Hi, my name is Andy and I’m a flashlight fanatic.

slowtechstef
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Hi azhu, that are 2 good looking Frelux Energy1s Smile
How easy/difficult was the emitter swap?

About the SST-20 group buy: which specific bin where you eying?

I myself have a Kaidomain triple 3000K SST-20. And while CRI, R9 (deep reds) and beam uniformoty are great, personally I think tint of my SST-20s is on the yellow side, while I prefer rosy. Kaidomain states on their website they sell the J3 HD2 bin which should be below BBL, but to me doesn’t look like it. Djozz also mentioned something about tint of the SST-20 he tested.

Edit: seems more people are interested in the binning Wink

djozz
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We are very spoilt by the tight bins of Cree leds that some sellers are offerring. Let’s hope for a good mix of tints with enough rosy ones.

I’m in for a couple if shipping from the US does not kill the price.

Thanks for trying this azhu!

g_damian
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I’m in for 13, but only if they are on or below BBL. How much does shipping to EU cost?

djozz
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g_damian wrote:
I’m in for 13, but only if they are on or below BBL. How much does shipping to EU cost?

In that case you are not in, the 352 group that is what the OP is offering is a mix of 4 chromaticity bins (GA3, GD2, GC1 and GB4) of which two are under and two are above the BBL.

BlueSwordM
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I wanted to do this groupbuy too, but with 3000-4000k LEDs instead.

The reason for this would be for the chance of tint mixing, getting the advantage of getting a beam that is always the BBL.

hodor
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I might be interested in a few, depending on shipping cost to the UK.

Thanks azhu!

AEDe
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If it possible to ship via EMS(or may be some other way but not UPS/DHL/Fedex). I am in for 30pcs

HONDARIDER
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I will commit to 10.

azhu
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slowtechstef wrote:
Hi azhu, that are 2 good looking Frelux Energy1s Smile
How easy/difficult was the emitter swap?

About the SST-20 group buy: which specific bin where you eying?

I myself have a Kaidomain triple 3000K SST-20. And while CRI, R9 (deep reds) and beam uniformoty are great, personally I think tint of my SST-20s is on the yellow side, while I prefer rosy. Kaidomain states on their website they sell the J3 HD2 bin which should be below BBL, but to me doesn’t look like it. Djozz also mentioned something about tint of the SST-20 he tested.

Edit: seems more people are interested in the binning Wink

The emitter swap is super easy. Just remove the pill, desolder the wires, and reflow the old emitter out with the new. Then reassemble in reverse order.

As for binning, I don’t think I can choose the bin. I’m selecting the tighter binning group closest to the BBL line so there should be a good chance it will not have an ugly tint shift even if it’s slightly above the BBL line. I have the 4000k SST-20 and the bin was above the BBL line but the yellow isn’t super noticeable. Every batch will be different so I’m hoping to get some below the BBL line.

Hi, my name is Andy and I’m a flashlight fanatic.

azhu
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g_damian wrote:
I’m in for 13, but only if they are on or below BBL. How much does shipping to EU cost?

hodor wrote:
I might be interested in a few, depending on shipping cost to the UK.

Thanks azhu!

AEDe wrote:
If it possible to ship via EMS(or may be some other way but not UPS/DHL/Fedex). I am in for 30pcs

For international, prices usually vary between $10-15 USD for USPS First Class International Package. It’s $14 to Italy for example.

Hi, my name is Andy and I’m a flashlight fanatic.

djozz
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I post leds in a small bubble mailer as a plain letter, no tracking. From the Netherlands that is a one euro stamp. Does it work like that in the States too?

azhu
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djozz wrote:
I post leds in a small bubble mailer as a plain letter, no tracking. From the Netherlands that is a one euro stamp. Does it work like that in the States too?

Yes I could do that too but it will be at the risk of the buyer should they choose to go that route. If it’s just for a couple LEDs, probably not a big risk but if ordering more, I’d recommend something with tracking.

Hi, my name is Andy and I’m a flashlight fanatic.

Slim Pickens
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I’m in for six.
Thanks for organizing this, 3500k is not a common CCT.

azhu
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Slim Pickens wrote:
I’m in for six.
Thanks for organizing this, 3500k is not a common CCT.

After using the Nichia sw35, I’ve come to really love this CCT, especially at night outdoors.

Hi, my name is Andy and I’m a flashlight fanatic.

SKV89
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Thanks for organizing this. I would be in for 40 (not that I need that many) just to support this if you could pin down a tint bin. The 4000k sold on KD is the FB4 bin, which has some green. Even the FA3 bin used by Fireflies, which is supposed to be at or below the BBL was reported to have some green/yellow in it and requires a minus green filter to perfect. I think it would be safer to aim for GA1 and GD4 tint bin.

I love the 3000k sold at KD with HD2 tint. It is a bit yellowish at lower lumen modes but at higher outputs the tint definitely drops below the BBL for a neutral/rosy without yellow tint. It is not as rosy as the E21A 3000k though.

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10pcs for me.

JaredM
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Mark me down for 12 please.

I have both 3k and 4k and seem to believe that 3500 may just be the sweet spot for these. Thumbs Up

Thetasigma
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Outside of Kaidomain they aren’t sold in individual bins, only the step binnings, the tightest bin available which is what this GB is for, will include GB4, GC1, GA3, GD2 tint bins. The SST-20 offers such excellent mix of CRI and great throw that it is hard to complain about even on the bins just above BBL.

I am in for 25.

dmsoule
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I’m in for 10. Love 3500K, but so hard to find, thanks!

tekwyzrd
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Add me to the list for 10

SKV89
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You can also get 3500k Oslon Square 92CRI in 5Q tint bin.

It is two tint bins below the BBL but in reality, it looks like it is on or just a bit below the BBL. It looks great but not as rosy as E21A 3000k mixed with 4000k.

djozz
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So maybe it is not really the 5Q bin that you got? It is nice that these 3500K Squares are for sale anyway, for a good price. Smile

SKV89
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djozz wrote:
So maybe it is not really the 5Q bin that you got? It is nice that these 3500K Squares are for sale anyway, for a good price. Smile

I bought multiple items from that seller and they’re pretty legit so I have no doubt that it is 5Q. It’s just that often times tint bins that are shown as being below the BBL in manufacturer’s spec sheets are actually above the BBL like in the Samsung LH351D case and as reported for the SST-20 4000k FA3 tint used in Fireflies lights. It takes 2 bins below the BBL to result in a tint at or just below the BBL. I would say the Oslon 5Q is comparable in rosiness to XP-L HI 5A/5D tint and a little less rosy than XP-G2 5A/5D tint.

The Oslon Square 96CRI 2700k 6U bin is beautiful and does look like it is at or below the BBL. Seems like tint bins for 3000k and below are more reliable like the SST-20-W 3000k from KD.

AEDe
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Sorry, I found more interesting offer Canada based(shipping is 3 times cheaper) so you can remove me from the list.

azhu
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We are over a quarter of the way there! Let’s make this happen. Really want to try them 3500k Smile

Hi, my name is Andy and I’m a flashlight fanatic.

SKV89
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azhu, there’s another GB thread for this emitter going on in another thread. I think it would be better if you work with BlueSword on merging the quantities so better chance of a successful gb.

azhu
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SKV89 wrote:
azhu, there’s another GB thread for this emitter going on in another thread. I think it would be better if you work with BlueSword on merging the quantities so better chance of a successful gb.

Thanks for pointing that out. I’ll reach out to see if we can combine efforts to make this happen.

Hi, my name is Andy and I’m a flashlight fanatic.

aswang
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Interested in 8 pcs.

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