Luminus SST-40, a N4 BA bin tested

I got mine from Shenzhen Great Technology Co.,Ltd

maybe that’s why! I wish I got from Shenzhen Great Technology

The lower Vf of the SST-40 should mean it is more efficient than the XPL. These emitters produce roughly the same amount of light at a given current, so the ratio of the Vfs at a given current will give the relative efficiency. The SST-40 is about 15% more efficient meaning it converts more of the input power to light rather than heat.

So at a given current the light output is the same, and the input power and heat production is less for the SST-40. At a given wattage the SST-40 produces more light (more current), and produces less heat.

Thanks EasyB.

So real-world example. I was running 4P XHP35 through a FET on 4S 18650. It was really bright, but the host couldn’t handle the heat. I’m guessing these would get me around 2,000 lumens less, but possibly similar lux and less heat? (in 4S instead of 4P, obviously)

I want to order a couple, Is Kaidomain selling real ones? Thanks!

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 won’t 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! :beer:

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. :slight_smile:

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.

Dave G is this the seller you bought your leds from him ? Store:Shenzhen Great Technology Co.,Ltd.

About heat:
I tested in a convoy C8 host samsung 25R battery, 10x7135 3500ma driver and with xpl HI the light got 60°C after 15 minutes.
Same everything with SST40 I got 61°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 DD’ed 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 mcpcb’s from kaidomain were too thin. Have to make a spacer to get them to fit…

I’ve experienced the same. Very nice uniform beam and tint. It’s 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 it’s not the normal led tint we are used to.