Luminus SFT40 test

Not that I know of. Only trusted source I know of is Simon, and all he has is the 6500K.

thanx,anyway. strange, as once that is dedomed sst40, this led should have 5000k option. i like its perfprmance, so, i hope, sst40 5000k should be way more attractive from the staindpoint of tint and overall throw usability

It's a different design from a SST-40, as djozz explained in the OP. Definitely not a straight re-packaged, de-domed SST-40. Looks like a new generation and the resulting output proves that. If the manufacturer dedomes (XPL-HI), or you manually dedome, you always lose a fair amount of lumens but this SFT-40 holds it's own with a SST-40 domed, and in fact handles higher amps better.

Agree though - I'd love to see this in 5000K, or warmer. I wouldn't hold your breath over a 5000K version. Look at freeme's group buy thread on a FT03 w/SFT-40 started in 2019 -- still not available!

hm, thanx for details..i thought that it is nothing but dedomed sst40

In a Palight BOSS1:

Close up view:

It hit 990 kcd in the 100 mm head diam BOSS1 on a single GOLISI 26650. This BOSS1 is direct wired, no driver.

Lumens on 4 old EFEST 4200 mAh 26650's: 2640 at start, 2315 at 15 secs (maukka calibrated). On my old lumens standard, it's: 2965-2600 ! Wow!

Best #'s I've seen from a single dye 5050 LED, and not bad tint shifts in the beam (ex: multi-dye XHP50.2 3v).

Thinking about opening my Q8 once again. This seems to be a convincing LED. If only the CCT were a little lower :weary: .

Iā€™m waiting for the 50.3s to swap into my EC03. Weā€™ll have a 50.3 HI if you want some more throw

It sounds like the luminance of the SFT40 is similar (but not better!) than the SBT90.2 . Think twice before swapping it into the WT90, you win runtime but maybe not throw.

Yea, thinking it's a draw at best for throw. Hard to do apples-to-apples compare with variables such as the reflector, focusing, etc. I'm sure a reflector that's good for a SBT90.2 is not always the best for a Boost HX, etc...

The more I think about it, probably the best comparison is in an aspheric, and I got a couple with SBT90.2's, the 1504 for example, with swappable pills.

I donā€™t mind the blue tint specially in a thrower, makes the beam look even more impressive in foggy nights :smiley:

Now I want to replace every single XPL-HI modded light with the SFT40. Anyone tried it in a C8?

Not yet in a C8, or C8 size. Gotta order more of these.

The Nitenumen TK-35 is a 52/53 mm head diam (measured), but this Ali listing has it at 46 mm, close to C8 size.

Will34 ,Well worth putting in a C8
I did like you say to upgrade from XPL HI with X5/X6 driver ,thinking a mild uplift in power/throw ,but itā€™s much better than I expected , now my best C8 thrower overtaking my old champ ,C8+ with a CSLNM1 @ 5amp by quite a bit ,maybe 25% better

They like 6500k because those bins are usually the brightest-lumens sell better than beam quality, remember? The majority of buyers of these are probably manufacturers of optocoupling instruments (like fiber optic stuff, optical scopes, lighting, endoscope, etc) or display illumination, automotive, and so forth. Cars mainly use cool white stuff for accent lighting (or DRLs). Thatā€™s mainly where domeless LEDs go anywayā€¦they make the most of what they sell the most, so go figure.

The SFT40 can be pushed close to itā€™s limit with just one cell so it would probably outthrow the SBT90.2 in a single cell light. For multi cell light the SBT90.2 seems the better choice though it is also more expensive.

Iā€™d expect about 180kcd from a C8+ SFT40.

TomE, how many amps on the BOSS mod? I think itā€™s easy to over current this emitter looking at the Vf.

And according to my calculations, SFT40 may outthrow a 90.2 by 5% when both are at their peak. In the real world, the SFT likely pulls a meaningful margin at 30s in anything but massive, multicell lights.

On the BOSS1 with just 1 GOLISI cell, I measured 9.5 amps at 4.12V. Fully charged for the test, it must be higher -- see I didn't note it, so probably didn't measure it. I backed off from using 4 26650's which the BOSS1 is capable of, afraid I'd be past the peak with amps. It's an insane light to say the least, massive, the handle is really quite handy for it, not just for heat but to hold it in one hand.

Got it. 9.5A is ideal IMO. Wouldnā€™t be surprised if your posted numbers are a bit overdriven w/ 4 cells.

Iā€™m going to try and resistor mod Simonā€™s ramping driver to 9.5A and see if it in fact uses a TINY13A and customize a UI.

Current plans for this emitter to live in:

TN31 R-mod
Supfire M6 w/ MTNe driver
B158
Convoy M2
L21B (stock)

Anyone with a FF E01 to try this swap ? Curious how that TIR works with this emitter. Astrolux EA01 would be interesting too.

I have an FF E01, yep, might be interesting.

The #'s posted were just on the single GOLISI. Think the 4 EFEST test was slightly lower results. Yea, could have been over the top, or the old EFEST's lost some power over the years, not sure.

I found the SFT40 on a mcpcb for sale. But I canā€™t find a driver for it. Any recommendations for 8-9 amps? Also, where to buy? (sorry, Iā€™m a noob) Constant current/single mode is OK. I donā€™t need extra features. Iā€™m also planning to run with an off-line power supply instead of batteries, if that makes a difference.

Hmmm, thanks for the testing djozz. Maybe Nitecore will use these on their next iteration of P12 and MH series. Would certainly be amazing. Hopefully they bring back the guarded tail-switch and the amazing rubber mode button in the next P12. The P12GT was absolutely perfect and every iteration after that has sucked. Exposed tail-switches (thatā€™s less of a gripe, I can live with a light that canā€™t tailstand but meh), and the part where they REALLY messed up was in the side switch (which is also the on/off button on their lights without a tail-switch). That button is nearly impossible to find in the dark. Itā€™s the same color as the rest of the light and you canā€™t feel it. Anyway, this LED seems promising. Might just try modding my old P12GT with thisā€¦ after I get it fixed that is. I think the P12GT uses a MOSFET driver, would this LED work with that? (Iā€™ve never modded a light before, newbie here so be easy on me :stuck_out_tongue: ) I know Nitecore uses a lot of proprietary components and theyā€™re a pain to get open, etc. (saw a thread once where someone opened up a P12GT, wish I had the link). Maybe I should just get a C8 and play with that first.

I see it being compared to the SBT 90.2, are they that similar? I have a Thrunite Catapult V6 and that has an XHP35 HI in it, would the SFT40 be a good upgrade for it? I can already see how modding lights can be a rabbit hole into which I could easily fallā€¦