Luminus SST-40, a N4 BA bin tested

Thanks for the update Mitko.

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.

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

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.

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.

“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! :slight_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.

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. :cry:

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 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.

Where did they come from for this to happen.

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

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.

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 :slight_smile:

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

Thanks LightRider. Maybe I missed it but couldn’t see a bin mentioned anywhere.

I don’t see it either. When these came in the mail I had to search my accounts because i did not remember ordering them at all. I don’t know why I would order without knowing the bin and I wouldn’t just randomly search for a store and buy something like this so I have no idea what I was thinking. Weird…

Hi guy, I order some luminus sst-40 led from aliexpress seller (Shenzhen OT-LED Technology Co.,Ltd) https://www.aliexpress.com/item/10PCS-Luminus-SST-40-10W-LED-1100lm-Cool-White-7000K-instead-of-CREE-XML2-XM-L2/32804792539.html?spm=a2g0s.9042311.0.0.vMExnl I ordered two separate order, first order was 2 piece and Second order 20 piece. The first 2 piece is real sst-40 the last 20 is not. here is proof look at the photo. the top 2 is the first 2 piece I got is real, and bottom 2 of the 20 piece is not real. all 20 piece on second order I got is not luminus sst-40. (fake). more like fake xml2 to me! no matter what I try, I cannot DD this led. I only left in M.E.K for 15 min this is what the led turn out. when people say you get what you pay for, now I know is true. I buy it from here because one of the members say is real deal. maybe he got his real but not my. I pay $16.00 for 10 piece x2. This Aliexpress Seller Shenzhen OT-LED Technology Co.,Ltd sell me fake Luminus SST-40!

To me the bottom 2 look real… The top 2 look like some XM die maybe or a clone of the XM. The SST-40 has the little dots in rows and the part that holds the die is silver.

if you zoom in closely you will see the difference in this photo.

The SST-40 has the black line separating the pos and neg metal parts around the die. The two bottom (fake) emitters pictured don’t have the black line.

The SST-40 does have the dots arranged in a square pattern as opposed to XML2 and XPL which have the dots in more of a diagonal/hexagonal pattern.

I think a lot of the lattice bright XML2 clones had the dots in the square pattern. I bet these crooked Chinese vendors are happy that they can again easily offload these fakes since the SST-40 die now looks very similar.

Damn, I will have to see what comes in my order. I have some coming from both places, Kaidomain and Aliexpress. They were cheap and I want to practice de-doming.

I have made three separate order for 5 LED’s from Shenzhen Great Technology Co.,Ltd so far they all turned out to be SST-40’s :

I guess I just got lucky