New Luminus SST-20 (3535 size)

Hi

Sure, you can let me know how many pieces do you want to order?

I can try to source the specified bin that you want to have.

Thank you

Ban

PM sent!

Usually it is not as convenient as that a distributor has all bins and tints on the shelf waiting for a buyer. My impression is that despite what is on the datasheet, only few bins and tints are actually produced and any different request must be especially produced, with the obvious minimum order numbers to make a production run going.

Dang it man… I want some.

Semiconductor bins are the result of post-production sampling and measurement.

My assumption is that they make a batch of wafers for violety, or whatever short wavelength they are using to pump the phosphor. These wafers are probably tested to determine parameters that may be used to fine tune later phases of the production process, like phosphor formulation.

The wafers are then used to make batches of whatever CCT and CRI ranges they think they can sell. Each batch will be tailored for a specific target, like 4000K, high CRI, or 5000K, 70CRI. Once produced, they’ll divide them into lots and then measure multiple samples from each lot.

When filling orders, they’ll combine lots in order achieve whatever binning the order requires.

None of which is to disagree with the point that distributors probably don’t have a lot of varieties on hand. Getting something specific probably won’t require a new production run (and if it did, it would require a large order), but it may require getting the manufacturer to pull suitable lots and make up reels.

Most emitters don’t end up being used on their own, their output ends up combined with that of multiple others. Whether or not a given emitter is above or below the BBL isn’t the concern for a lot of customers. They just want to be reasonably sure that, for example, a six-emitter halogen replacement bulb they make produces output indistinguishable from that of any other such bulb they made this week, six months ago, or six months from now.

Hello Ban,

I already took a set of both of your 95CRI SST20 tint offerings (HD2 and FB4). Probably I will take also some of the FA1 requested by SKV89.

I know, keeping up stocks of different emitters might be risky sometimes, but could you please source not just FA1, but GD2 tint as well?

I think, those could be very promising tints (I always looked for something between the ‘usual’ CCT offerings /5000K, 4000K, 3000K/ - 4500K is a true neutral white, while 3500K is a pleasant warm (but not overwhelmingly warm) white).

SST-20 4000K CRI95 arrived. Interesting to test it in a day or two.

Since there haven’t been any updates in a while, I was curious if any place besides Kaidomain offers these. It looks like Mouser might (if you can stomach their shipping prices).

They say not in stock, 5 week lead time, but they also say the minimum order quantity is 1. I don’t know if that means they’ll stock a whole reel on the expectation of future orders if somebody orders as little as one, or if your order would go into limbo if you don’t order a full reel.

I don’t know if this is even useful to anyone, but since I took the time to find these, here’s the best bins I saw in the high CRI versions, XP footprint (A120). The “##2” at the end of the part number is a chromaticity bin kit covering 4 possible quadrangles, 2 above and 2 below the BBL. A “##1” would indicate 16 possible quadrangles. You can’t specify which exact bin you would get.

2700K - SST-20-W27H-A120-J2272

3000K - SST-20-W30H-A120-J3302

3500K - SST-20-W35H-A120-J4352

4000K - SST-20-W40H-A120-J5402

The 3000K version is equivalent to what Kaidomain has, except Kaidomain’s are known to be below the BBL. The 4000K version is one flux bin higher, and Maukka’s test showed the Kaidomain J4 version as roughly equivalent to Nichia’s D220 flux bin.

Thanks. Cool to see that they are available from another source. I see that mouser is also offering the the cooler lower CRI SST-20s, too in MOQ1, but non-stocked.

They also list SST-40s now, and in 5000K and 5700K CCT, which I haven’t seen anywhere before. Unfortunately they are MOQ 500.

Thank you for mentioning that. I specifically wanted to get a few of 3500K CCT ones :partying_face:

I agree tried both 3000k and 4000k. 3500 should be a perfect compromise.

3500K should be a sweet spot, I put 2*4000K and 2*3000K in my D4 it’s puuurfect !

I hope someone bites the bullet and tests these cause in my opinion the 4000K from Kaidomain is just a bit too green, even more so than LH351D which doesn’t bother me too much.

I have the same emitter from that review. I like the other properties of the LED I just mean I want to see what tint this specific reel is from Mouser since I think the Kaidomain one is more green than I prefer.

The Mouser emitters could come from the same bin as the Kaidomain emitters. I don’t think there is any way to know until they’re received. I’m pretty sure Mouser just takes the reels as received, and trims off the ordered quantity without even looking at the bins.

The kits come in 4 bin and 16 bin sizes. The links I dug up are a 4 bin kit.

Here’s the chart Maukka posted in his review from the datasheet. Kaidomain’s current stock are FB4, so it makes sense that they’re a little bit green:

It could be, yes. But at least it’s a different flux bin so you know it wont be the exact same thing either way. A chance i’m sure someone is willing to take :slight_smile:

So, with the 4000k one, we have 1/2 chance of getting a below BBL LED, and a 1/2 chance of getting an above BBL LED.

Just use them in a quad :slight_smile:

Hmm.

Perhaps we should organize a GB for these LEDs.

I’d be up for about 25pcs for 4000k, and 10pcs for 3500k.

The price would be halved for 250pcs of LEDs, so that would be nice to organize.