Luminus SST-20-W 4000 K CRI95 color and output test

http://kaidomain.com/Flashlight-DIY-and-Tools/Luminus-SST-20-L3-DA-Neutral-White-5000K-LED-Emitter?sort=p.date_available&order=DESC

The dedoming will be the challenge, no leds dedome so nicely as the old-school Cree’s

Thanks Djozz.
I’ve been away from BLF for some months, so i have some catching up to do. :slight_smile:

Yeah, i bought 1 Liter of 99.5% Toluene for those SST’s, still a challenge though, but i’ll get some anyway.
I’ve still got a B158 waiting for a high intensity LED, for example.

I’ll try some of these high CRI ones too.

Slicing is the way to go with SST…
Now I’m impatient to get mines, they will go straight in the D4 :-p

Amazing testing maukka. Thanks.

Thanks for this test :+1:


Does nobody else see the burned place under the top bond wire? Is that just a slightly darker connection area? Was it that dark before the test?

There’s the before image at the top of the OP.

Thanks Maukka, Im always interested to see your reviews. This one would have been the perfect 219b replacement if the tint bin was below tbe bbl.

I tried dedoming (chemical way) two of this leds, it did not go well :confused:

Any thoughts on how these would compare to the stock emitter options in a D4s? I have the Nicha version, but I’d like either more throw, more output, or some combination of both. It doesn’t seem like these would give me much, if any more output than the Nichia and the XP-G2, but are they more intense than the Nichia? They are certainly higher CRI than the XP-G2s.

The difference in performance with a 219C R9050 will not be great. The CRI is better though, comparable to a N. R9080, which is not available in 219C, only in the lower performing 219B.

What did you use?

I intend to try when my 5000k come in from Kaidomain. I ordered 10 and I’m willing to waste some to see if it’s possible with Aerosolve II. If that doesn’t work I have some other solvents. I really want to see what this little guy can throw at 5 amps.

The problem with dedoming SST40s is the long/weak bond wires. The silicone separated nicely from the phosphor (using warm gas) but the silicone remains stiff and it pulls the bond wires out. I assume the SST20 has the same problem. Maybe a more effective solvent would improve the success rate.

Here are some Skylumen numbers for comparison

Thanks. By performance, do you mean overall output, or also intensity? I was just trying to compare two different S2+ I’ve modded with these emitters, and it looks to me like the area of the SST-20’s LES is somewhere between 25-50% that of the 219c. So, with similar outputs, the SST-20 should have higher intensity.

Thanks. That’s interesting. I’d guess the Samsung High CRI is the LH351D. These are with the stock driver? Which is a FET?

I wonder how 2x 5K SST-20 + 2x 3000K SST-20 High CRI would look…

^ By performance I was referring to output, efficiency and current handling, but you have a valid point that I did not consider yet, the SST-20 indeed seems to have a bit smaller die than the 219 (and XP-G2), so a bit higher intensity and better behaviour in small Carclo optics.

^ Thanks for clarifying.

I have some of the 4K coming. I’m still on the fence on whether to upgrade my D4s with LH351D for more output, or perhaps these for less flood.

Awesome. :+1:
Hope they will dedome well enough.