New Luminus SST-20 (3535 size)

Flashlight Modding and DIY Parts
33

I’ll try a sliced one in my Amutorch JM70 (now a dedomed XP-L) when I get them. If it improves throw I might test it in my Olight M3XS…
Will definitely update here

34

It is in the newest Audi’s, does that mean full production?

35

The one that replaces the Black flat, not the bigger one.

36

I’m sorry but a SST-40 6500K is not pure white. With a reflector you can easily see plenty of blue and purple spill. No doubt it’s a great emitter but I think this ‘white’ tint assumption is way over hyped.

37

SST-20 L2 6500K is available on kaidomain for $3.19.

38

Cool, thank you for reminding me. I just purchased 5 sst20’s from kaidomain. Let’s see if it gets here before the 10 I ordered from aliexpress.

I’m new to this led game. But from the relatively small amount of knowledge I’ve learned all signs are pointing to a the next rockstar LED.

I will test and report back to this thread. Ill do fet with a brand new C8 sofirn and fet with ut02. I’ll start with old pani laptop batterys then work my way up to a Sony vtc4a.

39

I also have 10 coming from that AE listing. I had been waiting on a response from KD, then just grabbed the AE after not hearing anything for a week or so. Of course KD listed them like the day after I pulled the trigger :person_facepalming:

40

I will probably order a few. The low Vf and (probable) high luminance dedomed make it a winner. The sofirn C8F triple might be a good match for this LED.

41

Yeah, the bigger one is the P, the smaller one is N.
Unfortunately no place has them in stock yet :frowning: 500 min order.

42

When buying 500, what’s the price? Just trying to get some indication of what we can expect…

43

It doesn’t say, you need to ask for a quote.
Also it’s actually 2000 min not 500, the 500 is for a ‘dummy sample’, whatever that means.
https://octopart.com/search?q=KW%20CSLNM1.TG&start=0

44

I will look into…

45

I got my 10 SST-20’s LEDs from aliexpress yesterday, so today i rigged up a DC-DC buck driver powered by 2 sanyo GA,s. Measuring Volts with a cheapo MM. Measured amps with a Uni-t clamp meter. And lumens with a lumen tubes I copied off of VOB’s utube video(that has been surprisingly accurate).

The lead wires are very long, so I’m sure voltage sag is happening.

Here are my numbers. Take it with a grain if salt, or boulders of salt.

[4 new items added to shared album] SST-20 bench test

Lumens started to flatten out at 3.67 vf,and 5.61 amps resulting in 1104 LUMENS.

I pushed it to 3.82vf and 6.41amps but zero gain or loss in lumens. Not sure what this means. But LED seems fine

46

Nice rig Redlyne22!

If the board is a DTP board (I assume it is), the current capability and light output of the SST-20 is not impressive.

47

so 1100 lumen max, great upgrade from xp-g2 i guess

48

Not impressive indeed, if the lumen number of 1104 is accurate. Compare that to the XPG2 S4 with 1300 lumens at 4.75A.

I was hoping for XPG2-like performance but with a low Vf.

49

Thanks man. its no where near the level of accuracy you test at. Mcpcb is copper but not sure if its DTP. The mcpcb is what the leds came on from aliexrpress. maybe I should reflow them onto a Maxtoch and run numbers again.

I’ve seen your tests. You are great at testing LED’s. So I’m all ears. Any pointers would be greatly appreciated

For the re-test, this is what I’m thinking to change.

  1. Reflow onto a known DTP mcpcb
  2. Shorter LED wires.
  3. ? Put a reflecter on the LED ? Maybe a P60 SMO reflector.
  4. Active Cooling.

I did the test fairly fast. As soon as I wrote down the results I raised the input,not allowing it to cool. should I wait and allow the LED to cool down.

I’m almost certain if I retest I’d get higher lumens, but higher lumens is not what I want, I want to be more accurate in this re-test. Either way, I’m fully open to recommendations.

50

Yeah, too bad, but maybe there are other benefits like a better tint after de-doming, easier de-doming or similar. It’s actually quite interesting that it’s not any better since the SST-40 is so efficient and has such a high max.

51

It is all relative. When I started led-testing I was in awe of BLF member “match” who had made an actual integrating sphere. He disappeared from BLF and then I found that someone should continue testing leds so I started with ceiling bounce led tests with a crappy luxmeter. And those simple tests were really valuable for modders compared to no testing at all, as is your test now. I refined things a lot over the years to get more accurate results but that is more for my own fun than that those more precise data have become so much more useful.

And now I’m in awe of maukka and Koef3 who clearly made test rigs more advanced than mine :slight_smile:

52

One test of one sample, of an unspecified bin, from one AliExpress seller doesn’t seem to justify the conclusions being reached here.

The datasheet shows a range between low and high bins of ~1.6x.

I’d at least want to see how the SST-20s that Kaidomain is selling stack up.

Also, FWIW, there are copper 20mm non-DTP MCPCBs for 3535 LEDs out there. I got one when I sampled the MCPCB offerings of a similar but different AliExpress LED seller. The 5050 & 2x2 array of 3535 emitters I received from them are DTP.