Texas_Ace
(Texas_Ace)
September 7, 2019, 11:19pm
4
Very interesting LED.
It is interesting that all the tints look good except the hotspot in the reflector being 6200k.
On paper it has a lot of tint shift in a reflector, is it noticeable in real life?
Besides that and the low efficiency it looks really nice.
I agree, a 3V version would be amazing.
finges
(finges)
September 8, 2019, 8:54am
5
Thanks for testing, interesting for sure!
Can you desolder one and give us a look at the footprint of the led?
MRsDNF
(MRsDNF)
September 8, 2019, 9:46am
6
Thanks to rngwn for supplying djozz with these leds to test and to djozz for doing the testing. I still use your charts djozz for comparing leds.
djozz
(djozz)
September 8, 2019, 9:54am
7
Thanks all of you for the appreciation! And nice to see you are still around Steve
Tally-ho
(Tally-ho)
September 8, 2019, 12:39pm
8
Thank you for the tests djozz.
Nice CRI and Duv but they should improve the manufacturing process.
Agro
(Agro)
September 8, 2019, 12:06pm
9
Thanks djozz, looks like a winner.
This led is made by Getian. I wonder how it throwsâŚitâs probably flip-chip so may be worse than wecould hope for.
Looks like a great use for the loneoceans 100w boost driver.
I also wonder about the performance of lowers CRI variantsâŚ.
rngwn
(rngwn)
September 8, 2019, 12:11pm
10
The 70 CRI 8000-9000k is quoted nominally (at 3A) at 3000-4000lm. That should translate to 3500-4500lm at 5000-6000k CCT.
The one Djozz tested is quoted at 3000-3200lm @3A .
KevinZA1988
(KevinZA1988)
September 8, 2019, 12:27pm
11
With Simonâs 12V driver it should yield more than 2000 high CRI lumens on turbo. Iâd be satisfied with that for now until something better comes along. Thank you for the test, djozz!
DB_Custom
(Dale)
September 8, 2019, 4:04pm
12
Good work JosâŚ
Steveâs waiting around for you to finish the flashlight so he can provide his addressâŚ
djozz
(djozz)
September 8, 2019, 10:22pm
14
If this led was in 3V I would have many ideas for it and probably the first flashlight already built.
Edit: it is at least not a design problem, looking at how the led is build up for 12V, a 3V version would simply look like this:
djozz
(djozz)
September 8, 2019, 10:39pm
15
I unsoldered the led to have a look at the footprint. It looks like it uses a board made for XHP70 in 12V configuration. I checked continuity of the thermal pad and the core and there is, so the board is DTP: the entire thermal pad seems one with the core.
rngwn
(rngwn)
September 8, 2019, 10:39pm
16
The footprint looks like its for 12v only. But at least you can swap the MCPCB size.
pol77
(pol77)
December 2, 2020, 7:10pm
17
So, what happened to this LED? No news in over a yearâŚ
djozz
(djozz)
December 2, 2020, 7:29pm
18
contactcr
(contactcr)
December 2, 2020, 8:21pm
19
Simon also got samples of this LED from Getian, but no further details. I think he said he used to work for this company at some point in time too.
[image]
i get some samples from Getian company.
12V 4A driver for L6 is in design ,too
ArtieT59
(ArtieT59)
March 2, 2021, 7:07pm
21
Iâve never seen a bare 12v or 6v mcpcb⌠based on the picture above, what indicates visually that it is either 12v or 6v ? I have a flashlight in either one of those and Iâd like to examine it.
JaredM
(JaredM)
March 2, 2021, 9:21pm
22
Some are configurable like (at least older) Sinkpads. But a 6V will look like a normal mcpcb with âthree-stripeâ pads. The 12V will have a âsâ shaped pad where the Anode and Cathode are split and half are connected to the thermal pad. Pic from Djozz on the first page⌠Alibaba GT-FC40 tested (a 5000K 95CRI 12V domeless XHP70 replacement, supplied by rngwn) - #15 by djozz
Lumeniac
(Burgerman)
June 10, 2021, 7:11am
23
thanx a lot. dont think itnis that interesting. jist.beacuse of some more throw...such worse power efficiency is deal killer for me