I have five from Kaidomain, they are real!
Sounds about right. Though these will pull a lot of current so it will still be a lot of heat. But unless you use a good buck or boost driver you wonāt see the efficiency gain over XPL V6. I think the real advantage of these over the XPL V6 is their ability to be driven harder in a direct drive situation.
Thanks tm07, ordered some!
WhT host are you using?
thank you djozz for taking the time and effort for doing this tests, you are a wiki to me plz dont stop
Thank you 1000 times
We have something in common gamezawy.
I got my SST-40s that I ordered from Shenzhen Great Technology on AE. All three appear to be the real deal. I also got one from Kaidomain and it is also a real SST-40.
There are some slight imperfections though. The one from KD and one of the Aliexpress ones are slightly raised. Probably not enough to be a concern since there is still solder under the center of the emitter. I will probably try to get the Ali one seated correctly since I plan on driving that one harder than the others. The DTP copper feels soo much nicer compared to the thin aluminum boards the others are on.
About heat:
I tested in a convoy C8 host samsung 25R battery, 10x7135 3500ma driver and with xpl HI the light got 60Ā°C after 15 minutes.
Same everything with SST40 I got 61Ā°C.
The XPL HI output with full battery is 1056 lumens and the SST40 I measured 1122 lumens.
@ gamezawy - Yes that is the seller I bought from.
I measured 8,2A and 1938 lumens with TA17 driver in Convoy C8
Im really liking the tint on this SST40 from both Shenzhen Great Technology and Kaidomain. Im not really a fan of colder tints but these turned out surprisingly nice. It has a pinkish white tint compared to the blueish Cree (cool white) emitters.
I have them DDāed in a Convoy C8 and it is performing really well. Very happy with them.
Nice!
I tried to get my first sst40 mod working last night but those mcpcbās from kaidomain were too thin. Have to make a spacer to get them to fitā¦
Iāve experienced the same. Very nice uniform beam and tint. Itās not nice as in pure white. It definitely has a tint but as was said this tint is a pale purpley tint. Hard to describe as itās not the normal led tint we are used to.
Has anyone thought about sticking dedomed SST-40s under carclo 10 mm optics? For example with Emisar D4.
Thereās no PCB for it, but since die size is similar to the XP-L, it should be floody, but not all flood. And significantly brighter than XP-L HIā¦
It wont be much brighter when de-domed. Hard to notice by eye and only at super high currents for a few seconds (20+A with three LEDs).
The way I see it:
- SST-40 has similar current-output curve to XP-L V6
- By chemical dedoming you lose roughly 1 bin, so itās 2 bins ahead of XP-L HI
- But Vf curve is way lower, so it draws more current
Xml2 T6 shows almost the same result as highest bin xpl it is a bit strange. Xml u4 then will be best emiter.
I donāt really agree. I think if you want maximum output the SST-40 is the best from 3V emitters.
Watch my numbers in the Convoy C8 section.