Luminus SST-40, a N4 BA bin tested

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Pulsar
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Sounds like this may be good to upgrade my Supfire m6 with

Thanks for the detailed rundown of this emitter. I got a itch to have a light with each worthy emitter, and I think this would be a good one.

18sixfifty
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I’m actually a fairly big fan of the SST-50 for it’s efficiency. At higher amps it’s heat can be a problem but for running at low amps it does a wonderful job. One of the lights I use most often is a cheap sharp eagle zoomie with a de-domed SST-50 in it. At low amps it’s still fairly bright and a good 26650 seems to go forever without needed a re-charge. I don’t have the equipment to test it but I always suspected that it must be VERY efficient at low amps. Too bad they are so pricey.

But good news on these new ones. I’ll have to get my hands on a few and see what I can do with them.

I’m a junky, I mod lights so I can sell lights so I can buy more light to mod so I can sell lights to buy more lights to mod.

Agro
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18sixfifty wrote:
I’m actually a fairly big fan of the SST-50 for it’s efficiency. At higher amps it’s heat can be a problem but for running at low amps it does a wonderful job. One of the lights I use most often is a cheap sharp eagle zoomie with a de-domed SST-50 in it. At low amps it’s still fairly bright and a good 26650 seems to go forever without needed a re-charge. I don’t have the equipment to test it but I always suspected that it must be VERY efficient at low amps. Too bad they are so pricey.

But good news on these new ones. I’ll have to get my hands on a few and see what I can do with them.


Either you’re very wrong or fonarevka’s calculator is:
http://ledcalc.fonarevka.ru/?pct&LedCount=2&Imin=150&Imax=2000&Istep=50&...
(click ‘calculate’ button under that url)
SST-50 is not efficient, not at all.
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Impressions are never ‘wrong’ Smile

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

khas
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I just received five SST-40 from this seller on Aliexpress, they turned out to be the real deal. There is of course no specific information about tint/bin but with my unscientific testing they seem on par with the one I bought from KD.

There is also a bit of green in the lower modes just like the one from KD. The MCPCB’s is not very good but that didn’t come as a surprise. The price has gone up a bit I payed $1.69 a piece.

18sixfifty
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khas wrote:
I just received five SST-40 from this seller on Aliexpress, they turned out to be the real deal. There is of course no specific information about tint/bin but with my unscientific testing they seem on par with the one I bought from KD.

There is also a bit of green in the lower modes just like the one from KD. The MCPCB’s is not very good but that didn’t come as a surprise. The price has gone up a bit I payed $1.69 a piece.

Nice, I’m always a little leery of buying emitters for aliexpress, but they have done pretty well with flashlights and other things. One thing about them, if you order from them and they don’t come through, you get your money back, no problem.

I’m a junky, I mod lights so I can sell lights so I can buy more light to mod so I can sell lights to buy more lights to mod.

djozz
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Nice, the AE seller is really cheap.
And some nice dedoming you did there! Smile

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

khas
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After luminarium iaculator revealed his metode in this thread and I happened to be in Italy so I could buy the “magic” fluid they turn out great every time Big Smile

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Put my SST-40 from KD in a Convoy M1 with a MTN-17DD fet+1 driver and I Really like it. The tint almost has a purplish color to it at higher amps, but not in a bad way, very pleasing to the eye, especially for low CRI.

Newlumen
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Jensen567 wrote:
Put my SST-40 from KD in a Convoy M1 with a MTN-17DD fet+1 driver and I Really like it. The tint almost has a purplish color to it at higher amps, but not in a bad way, very pleasing to the eye, especially for low CRI.

Hey can you show us the sst40 dedome beamshot?? I don’t mind about the camera quality.. you can use postimg.org for loading. Thanks.

Jensen567
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I would, but mine is not de-domed, just installed as it came from the factory. Beam looks almost identical to a typical XM-L2 in the M1.

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Tempting LED in all, but would be nice to have higher brightness bins available somewhere (for EU).
Still, 2000 Lumen at 20 Watts at 3.6 Volts and 5.6 Amperes is very nice.

vestureofblood
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Nice find. Thanks for sharing.

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I got some from Arrow too: 7500k the highest bin,

The main difference is: when properly dedomed( its not that easy though, at least those samples) The tint didnt shifed much, like only 1000k or something , thus resulting in the best cool white tint( accoarding to the BLFers), like 6000k 1D or so, paired with an the AR glass even i like it.

I tried keeping it at about 7, 7.5 amps tops, to awoid burn-outs

Paied with a good fed dd driver it resulted at arround 2050-2080 lumens( at 7 amps) WHEN DEDOMED, measured with my spectrometer, candelas ( in most knows hosts) are as follows
C8 – 162000
X6 – 108000
L2 – 315000
B158 – 269000

I`ve modded a M3x torch with it too, using a boosted default driver at 7.1amps and it ended at 335k candelas

A very good emitter, especialy if you aint at a good cool white tint after dedoming, simmilar or even an idea better than W2-W3

The_Driver
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Thanks Mitko! This is very nice to hear!

Seems like it will be perfect for a lot of builds:

  • high luminance
  • no yellow/green corona
  • high maximum current
  • low Vf
  • no extreme tint shift
  • somewhat low cost
  • standard XM soldering profile
Mitko
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Indeed

Something interesting: even with a battery at 3.45v( a never charged brand new VTC6) it still gives 3.8 amps and 98k candels in a C8 host, a result better than most even high driven XPL emitters in that host

And the hotspot is nearly perfect

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How is the color rendering? Any different compared to those Crees?

luminarium iaculator
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Nice to hear that report Mitko. I guess I could machine tube for your(mine) Mitko’s thrower and put the buck driver in. 7A for DD fet is not a lot of fun to play but it surely shows potential.

Edit: or longer tube with parallel craddle for 2×18650 and fed dd for a bit longer turbo times…

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Thanks for the update Mitko.

My current and or voltage measurements are only relevent to anything that I measure.

Budget light hobby proudly sponsored by my Mastercard and unknowingly paid for by a hard working wife. 

djozz said "it came with chinese lettering that is chinese to me".

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EasyB
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Mitko wrote:
I got some from Arrow too: 7500k the highest bin,

The main difference is: when properly dedomed( its not that easy though, at least those samples) The tint didnt shifed much, like only 1000k or something , thus resulting in the best cool white tint( accoarding to the BLFers), like 6000k 1D or so, paired with an the AR glass even i like it.

I tried keeping it at about 7, 7.5 amps tops, to awoid burn-outs

Paied with a good fed dd driver it resulted at arround 2050-2080 lumens( at 7 amps) WHEN DEDOMED, measured with my spectrometer, candelas ( in most knows hosts) are as follows
C8 – 162000
X6 – 108000
L2 – 315000
B158 – 269000

I`ve modded a M3x torch with it too, using a boosted default driver at 7.1amps and it ended at 335k candelas

A very good emitter, especialy if you aint at a good cool white tint after dedoming, simmilar or even an idea better than W2-W3

Looks good. The candela numbers seem consistent with djozz’s lumen measurements relative to the XPL V6. At 7.5A the SST-40 has about 14% more output than the XPL V6 at 6A (a typical direct drive current for this emitter). I usually get around 94Kcd from a dedomed XPL V6 1A in an X6, and 108Kcd from the SST-40 is a ~14% improvement.

Great new emitter. I’m still waiting on mine from KD.

Newlumen
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I am not a modder.. I like flashlights.. can this sst 40 dedome swap on the jetbeam t6???

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Got my SST-40s in the mail. It may have too low a Vf for single emitter use (for my tastes). I was getting 8-8.5A with mostly charged cells (GA and 30Q at ~4.05V), measured using a 10mOhm shunt in place of the tailcap in a EE X6 with FET driver. Current seems a bit too close to the 9.6A that fried the LED in djozz’s test; too risky. Maybe better used in multi-emitter FET driver setups where the LED’s low Vf allows them to be driven better than XPLs and have a bit of a safety margin below the ~9.6A point.

Edit: I dedomed one using hot gasoline. The dome separated from the phosphor pretty cleanly in 20-30min. I made some small slits with a razor blade right at the base, as if I was starting to slice the dome off. I’ve heard of other people doing this. Not sure it had any effect, but thought I would mention just in case.

Newlumen wrote:
I am not a modder.. I like flashlights.. can this sst 40 dedome swap on the jetbeam t6???

The jetbeam T6 uses XPL emitters, which have a different footprint on the MCPCB than these SST-40s. If you want more throw you could dedome the XPL emitters it came with. You would need to take apart the light and remove the MCPCB and learn a procedure to dedome the LEDs.

luminarium iaculator
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“It may have too low a Vf for single emitter use”

High Vf emitters are not so bad as we think.If you want single 18650 performer than run time should matter to.

And I hate to say but it seems that new production XP-G2(at least the one I have) gives the most optimal performance at very low current draw (XML2 or XP-L performance at only 3,6A current draw with even larger beam than good old XP-G2).

3,6A! Smile Light never gets hot and performs superb. I should slap myself out when I was speaking against new production process XP-G2’s cause they ain’t that bad after all… At least for fed dd drivers.

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I received four pieces sst-40 yesterday. All four had scuffs and nicks on the domes. It’s not much but I don’t like it. So I guess I’m going going domeless. Crying

EasyB
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luminarium iaculator wrote:
“It may have too low a Vf for single emitter use”

High Vf emitters are not so bad as we think.If you want single 18650 performer than run time should matter to.

And I hate to say but it seems that new production XP-G2(at least the one I have) gives the most optimal performance at very low current draw (XML2 or XP-L performance at only 3,6A current draw with even larger beam than good old XP-G2).

3,6A! Smile Light never gets hot and performs superb. I should slap myself out when I was speaking against new production process XP-G2’s cause they ain’t that bad after all… At least for fed dd drivers.

For me the optimal situation is to have the emitter(s) be driven as hard as possible without being too inefficient or risk dying from over-current. To get runtime you can always just go to a lower mode. So a single XPL V6 with FET driver is driven just about optimally at 6A, but when you put 3 or 4 in parallel from a single cell they are not driven as well. 3 or 4 SST-40 in parallel might work really well.

When you compared XPG2 performance to XPL, to be clear you are talking about luminance and not total output.

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I got my first modded blf light from djburkes. I am very impressive with his works.. he solder joint both spring and bypass wire.. the one on the left is convoy c8 sst40 dedome.. right one is eagtac s200c2 xpg2 s4 dedome..

The tint on the sst40 dedome is very nice. No green.. it’s throw like a xpg2 dedome.
IMG_20170721_184520217

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LightRider wrote:
I received four pieces sst-40 yesterday. All four had scuffs and nicks on the domes. It’s not much but I don’t like it. So I guess I’m going going domeless. Crying

Where did they come from for this to happen.

Does anyone have links to a higher bin than whats at KD?

My current and or voltage measurements are only relevent to anything that I measure.

Budget light hobby proudly sponsored by my Mastercard and unknowingly paid for by a hard working wife. 

djozz said "it came with chinese lettering that is chinese to me".

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LightRider
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I got them from here&.

I don’t remember how I got the link to this store? Thought it was recommended by someone. The price is pretty cheap. Maybe they are fakes or b-grade factory rejects? I have not tryed them out yet. They look genuine but who knows.

luminarium iaculator
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EasyB wrote:

For me the optimal situation is to have the emitter(s) be driven as hard as possible without being too inefficient or risk dying from over-current. To get runtime you can always just go to a lower mode. So a single XPL V6 with FET driver is driven just about optimally at 6A, but when you put 3 or 4 in parallel from a single cell they are not driven as well. 3 or 4 SST-40 in parallel might work really well.

When you compared XPG2 performance to XPL, to be clear you are talking about luminance and not total output.

I do only single emitter 18650 fet dd builds(mostly aspherics) and XPL V6 with 6A current draw is also to much imho.
New XP-G2 under precoolimator gives even larger beam than dedomed XPL with slightly better lux performance and all that at 3,6A draw which means same total output with even more intense beam to dd XPL and a lot of play on turbo and it can be safely on turbo all the time without any worry. That is important if you need longer runtime scans (driven hunting).

In reflector xpl has greater total output with same or lower intensity than G2 but I would also sacrifice that for good runtime on turbo mode and of course swap it to g2 Wink

So when you say “For me the optimal situation is to have the emitter(s) be driven as hard as possible without being too inefficient or risk dying from over-current” that emitter is new XP-G2 and only if thing did not changed on market cause Mitko and few guys reported new change in production process of XP-G2 emitters so I will not claim anything for sure cause things maybe changed now Smile

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Could use an LD-3 driver and limit high mode to 6A regulated.

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