Thank you TBone for pointing that out, didn’t pay attention to it before.
Hey Clemence,
Those R9080 LEDs are horrible.
They make the R9050 LEDs all look like Cree.
I remember someone here in BLF said that 219B sw45k makes everything looks ugly, even the the sun! :laughing:
I’ll try to stock 6570e R9080 next time and see how it compared to mid day sun. Never tried anything as cool with such a high R9 number.
Zebralight is one of the best headlamp as is, but very hard to modify (potted driver, press fitted bezel and button). I don’t know about Acebeam, but by the looks it should be easier to mod.
No MOQ, just visit the store. There’s a link in my signature
- Clemence
both are 4000k, if thats what you are asking
tint wise, look at this page, it has pictures of the Tint Bins
https://www.virence.com/blank-rwrlr/nichia-nvsl219ct-nvsw219ct
the image on that page that shows the two LED Tint Bins you are asking about is also posted here (I used search thread “4070e”)
Pick a 4070e in clemence’s shop and see the diagram for it. The 403 bin is a small circle around the blackbody curve at 4000 K. 4070e is the lower right 60° slice of a much larger circle there. So if you do not like green (or yellow/orange) in the tint the 4070e bin keeps you on the red (not blue) side of the blackbody curve.
The Cree equivalent may be 5D vs 5B.
Thanks for the photos Clemence… I did a little cut and paste so top of each photo pair is the control image:
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Wow, thanks Jon & T-bone. I just woke up and about to reply Storm’s question but you guys already did it. :+1: 
- Clemence
Check this:
The HC30 is a quite powerful light.
I didn’t measure, but it looks like it pushes 3 Amperes on the highest mode (“turbo”).
That’s a bit much for a 219B.
I recently put a 219C 4000K in my HC 30 plus TIR optics, and it gets rather hot on turbo.
No hidden 219C sm573 R9050 left.
For better control during reflow, put a thermocouple and monitor the temp no more than 260C. Some cheap MCPCB start to delaminate as low as 240C. Most good known LED will survive for few seconds up to 300C. If you’re using leaded solder paste, 240C is already hot enough. Most LED reflow failures are due to the thermal pad not soldered properly. When the solder melted, try to move the LED (using tweezer) back and forth to make sure all the pads properly wet by the molten solder. If you can spot dry areas, a flux drop should fix the problem. This is common if you reflow LED that has been left in humid storage for a long time. The contact pads become tarnished or patina.
Hope this helps,
Clemence
Don’t know anything about those. I use liquid PCB flux. Similar flux used to thin solder paste
Good for cables and large terminals. Removes oil or oxides, and improves wettability.
NOTE: BS-10/15 is a weakly acidic paste. Cannot be used on PCBs.
“rosin soldering flux” is natural and good.
Whoa, kewl!
Where is that? Dagobah?
I love it when people post nice pictures!
That looks like dawn/dusk to me
- Clemence
I like it!
219C sm273 R9050 vs 219C sm503 R9050
These are my EDC.
Outstanding!
These warm LEDs lend themselves well to full darkness low lumen applications.
iirc you are using Fenix E05 AAA hosts (guessing the lowest mode w 2700k is about 4 lumens)
fwiw the oLight i3s AAA is also a great host. It has a clip that fits on a hat, and a sublumen mode of ~0.02 lumen when modded to 3000k. Very useful, for dark of night bathroom runs.
Just a week ago I had an idea to create another thread in “off chatter topics” dedicated for food porn lovers….
Like with cucumbers and stuff…? never mind…
Must say though, i’m not too thrilled about the 219C 3000K tint.
It’s rather yellow actually, expected more red too, seems like less than R9050.
Maybe it’s just that i miss the extra red in warm tints like 3000K.
But by comparison, i have some Osram Oslon 2700K 95 CRI which do have a lot of red.
It wasn’t specified but those seem to be R9080 and also the tint is more like orange / pink.
(Got some 3500K of them too, but haven’t tested them yet.)
Compared this to the E21 4000K and i get the impression those are rather to the red side of the black locus.
Very nice though.
…and that’s my ‘anecdotal’ feedback for today