Luminus SST-40, a N4 BA bin tested

[Lexel]

you can see blown bond wires with magnification glass or macro function od a compact camera

[Jerommel]

@KawiBoy1428

@EagleShield

I think I have read that having little silicon left on the bond wires is just good because it protects them.

Not if you can see it in the beam. I think 18sixfifty has had some success, from what I gather, he slices and dices before chemical de-dome bath/soak.

The silicone dome has a heck of a hold on them bond wires. :rage: I have also had the chip coming off the pad on a few of them too! :person_facepalming:

Wow, even some of those from KD have badly solder flowed chips??
There’s no way the solvents cause the chips to fall off i.m.o.
On mine you could see it wasn’t soldered properly.

[Jerommel]

@KawiBoy1428

Maybe or could be, if they are weak, they might be damaged, I had a few that would light, go thru the levels a couple times and then burn out, some instantly and they still had the dome on, it was released from the base just not completely off, so I’m left wondering, was it the bond wires or was it the chip to the pad problem? Dunno?

Whoa, that sounds like the KD ones are from a crappy batch too…

[Agro]

Got my SST-40s from Shenzhen Great Technology Co.,Ltd, they appear legit. :+1:

[eas]

@Agro

Got my SST-40s from Shenzhen Great Technology Co.,Ltd, they appear legit. :+1:

Do you have a link?

[Newlumen]

Anyone know if I can use Sony vtc5a on my fenix TK75 quad modded with sst-40?

[zeremefico]

@Newlumen

Anyone know if I can use Sony vtc5a on my fenix TK75 quad modded with sst-40?

Sure but If you want the full power, you should mod the carrier.

[Agro]

@eas

@Agro

Got my SST-40s from Shenzhen Great Technology Co.,Ltd, they appear legit. :+1:

Do you have a link?

https://www.aliexpress.com/item/10PCS-100PCS-Luminus-SST-40-10W-LED-1100lm-Cool-White-7000K-instead-of-CREE-XML2-XM/32819284669.html
Funny, it appears renamed to “GreatLED Store”.

[Newlumen]

I forgot to mention the carrier is modded., will post photo tonight… I just want to know if Sony vct5a are safe with sst40.

[Newlumen]

Ok here is my fenix tk75 quad sst40 dedome. Is Sony vtc5a safe to use in this light?

[EasyB]

It’s possible you will blow the bond wires from too much current (~9.5A) if it’s direct drive and low circuit resistance. What is the voltage configuration and driver? And have you used other cells in the light successfully?

[giorgoskok]

I think Newlumen’s light is modded by Vinh , with “driver vnx2” which is a fet driver .

I would use VTC6 to be safe…

[Agro]

Ask Vinh. He usually uses VTC5A…

[Newlumen]

Yes sir. The tk75vn is modded by Vinh. Probably drawing 4.5 amp from each cell… the Carrier is 4S… I like using Sony vtc5a. So far I have no problem using the highest mode with my vtc5a.

Either way, if the light break, he said he will fix it for free… so I don’t worry much…

[giorgoskok]

@Newlumen

Yes sir. The tk75vn is modded by Vinh. Probably drawing 4.5 amp from each cell… the Carrier is 4S… I like using Sony vtc5a. So far I have no problem using the highest mode with my vtc5a.

Either way, if the light break, he said he will fix it for free… so I don’t worry much…

It draws about 8-9 amps per cell .

[gamezawy]

Please advice from those who bought SST-40 from Aliexpress store called GreatLED Store, that it was called Shenzhen Great Technology Co.,Ltd.

How was the LED performance ? despite the problem of bubbles in the dome

i want to use this led in general lighting so what i care about is its performance in producing a lot of lumens

[AlexGT]

Anyone knows if there are higher bins available somewhere? Thanks!

[djozz]

@AlexGT

Anyone knows if there are higher bins available somewhere? Thanks!

I think I read in Richard’s thread that he asked about other tints/bins but that Luminus thusfar only made a few types at all.

[eas]

@gamezawy

Please advice from those who bought SST-40 from Aliexpress store called GreatLED Store, that it was called Shenzhen Great Technology Co.,Ltd.

How was the LED performance ? despite the problem of bubbles in the dome

I ordered two from there. I couldn’t make out any flaws in the domes of the ones I received. I put one in a direct-drive light. I haven’t done any rigorous tests, but I can say that it puts out a lot of light and runs relatively cool. I built a similar light in an F13 host, with a 26650 battery, but I used an SST-40 emitter on a DTP copper MCPCB I bought from Kai domain. I’d estimate they have similar performance, but the one from KaiDomain is slightly warmer, as expected.

[Jerommel]

@EagleShield

What is the best forward voltage bin for this led for flashlights with the A17DD or X5/X6-driver?

Forward voltage bins for sst-40

As giorgoskok wrote, the sst-40 specs from aliexpress store: Shenzhen Great Technology Co.,Ltd.

Flux : N4
Color : BA
Voltage: VK (min: 2.9V max: 3.1V)

You see that there are 2 bins lower then the VK bin and I guess if you use those with DD-FET driver you get more Amps (if I understand this correctly) then the VK bin but that means more heat.
Are those VH and VJ bins better (more Amps = more light) or are they so good they get worse (to much amps = to much heat and the led burns)?

Edit: removed a picture as requested (couldn’t they just go to Kaidomain’s site and copy that picture instead?)
.

KD has VH Voltage binned SST-40’s now.
Has higher brightness bin too.
http://kaidomain.com/Flashlight-DIY-and-Tools/LED-Emitters-or-LED-Star-on-PCB/High-Power-Luminus-SST-40-Voltage-VH-N5-BC-White-6500K-LED-Emitter?sort=p.date_available&order=DESC