[1900k edition is in!] WTS: 1900k-5800k 5mm LED 95+ CRI

I don’t know in which pile in which part of the world they are but this package is really slow, sorry about that. I will check them as soon as they get in.

rngwn accidentally posted this in my BLF contest thread so I’m just moving it here so the relevant parties are publicly notified.

Thank you :+1:

Looking forward to getting mine - I already have the 3400K rngwn sent me last year, and they’re really nice :slight_smile:

I’d be interested in 4000K / 4500K / 5000K if any of those became available… :innocent:

Finally the 4000K samples arrived. And these are a surprise. I checked 3 leds at 30mA.

*First, they are not 4000K but 5000K, what is a disappointment because that makes them less special.

*The beam is nice and smooth, I checked three leds, and there are no visible tint shifts over the beam, one of the 3 leds has a slight unevenness in the hotspot, which would annoy a purist but does not affect a normal user. The other two beams were perfectly smooth.

*output: 15 lumen at 50mA, 120mA does not kill the led. (no output curve is not measured yet)

*Tint and colour rendering, see for yourself:
Led1 CCT=4960 duv=+0.0009 CRI=98.6 R9=98.3 R12=79 Rf=93.7 Rg=100.8
Led2 CCT=5000 duv=+0.0013 CRI=98.4 R9=98.3 R12=88 Rf=93.7 Rg=100.6
Led3 CCT=4960 duv=+0.0014 CRI=98.5 R9=97.7 R12=81 Rf=94.2 Rg=100.9

So tint very close to the BBL, and extreme good colour rendering.

So another great led from rngwn, but unfortunately not the expected 4000K

The beam btw is much narrower than the Yuji leds, maybe this is a 30 degrees led. Beam (30mA) at 30cm from wall:

On my tablet it looks like the center is a bit rosier and the edge a bit greener, this is not what I see in reality, as posted above there is no obvious tint shift at all in the beam.

Thank you, djozz, for the useful tests. :beer:

5000K is a bit far off for the 4000K declared. But you can always mix them.

How does this led compare to rngwn’s other leds? Do the other leds have a lower CRI or are brighter?

The closest previous 5mm led from rngwn was a 5800K one, a short test elsewhere in this thread: link. I’d say it is about equally good, output slightly less, colour rendering slightly better. But I like the narrower beam of this new 5000K led a lot, makes a very useful beam that is a bit brighter.

Here are the two leds together plugged in parallel into the same power supply, 60mA among them. That tells that the voltage can not be much different as the outputs a similar ( but I think the 5000K voltage is a bit higher so that it receives a bit less than half of the current) :

The tints in the picture came out rather close to reality (on the screen of my Sony phone at least).

Alright, I will sell these as 5000k.

These will be priced at $7.62/pack of 50 ($8.00 after fees).

There are 19 packs of these available. I have no plan of restocking these.

PP sent for 5000k tracked.
Love them all and hate you also cause now i’m buying 5mm hosts like crazy

Cheers

^lol

But hey, the good thing is that 3xAAA lights are wide enough for 21700 cells. :slight_smile:
With some wizardry it is often quite possible to get all 70 millimeters in there too.
But sub C NiMH cells now have become interesting too.

Gives you enough space for a boost driver (which you’ll need).

Hmm…
Still a good CCT for headlamp work though.

Hey, that’s us ! :smiley:

Will normal users buy these LEDs? :wink:

Any way to tell / guess what causes the difference?

Ah, Throwers ! :blush:
Not what i personally hoped for, but should do a decent distance with a bunch of them (> 20 LEDs) together.

I guess you could dedome these to get less (or no) throw.

Looking forward to your output test (which i’m sure you will do soon).

The output is similar to the others at least, was not planning a test these days, maybe later.

Shipped:

LowLumens: (1x 2300k / 1x 3400k)
Tldd: (1x 2300k)
id30209: (1x 5000k)
LedTed: (1x 5800k)


Well, after the recent bunch of lost mails so it’s time for to set up a ground rules of how much I can comfortably compensate for the loss. I have modified the shipping table so it includes the information on how the compensation will be made should the package is lost. The rule will be in effect from today onwards (Jan 21, 2020).

This does not apply to those who paid before that, which they are in for 1 additional shipping attempt if I know convincingly that the package is lost.

That sounds good^^^

Thx!

New host for 5000K arrived

Came here to confirm receipt of my latest LEDs and…

Ooh, 5000K LEDs! Paypal sent :slight_smile:

I warmly recommend buying from rngwn, he packs his stuff well and ships it quickly. Both of my packages came from Thailand to Scotland in 10 days flat, with all LEDs in perfect condition.

Thanks very much for making these rare LEDs available to us, rngwn :+1:

You also have Royal Mail’s (relatively) efficient handling of mails to thank for that.

Just checking in to say I received my shipment on Jan 31, About 10 days to reach California.

My first time trying the 2300K, I am so glad I finally ordered these!!! Perfect extra warm color temp for candelabra, night lights, etc. and preserving your melatonin levels at night.

Thanks so much for offering these little gems!

I got my LEDs today and played with them as soon as I could rig up an ATtiny85 project.

The: LEDs, shipping, packaging, and service were all top notch.

The price for quality of special binned emitters is unbelievably affordable.

I see some LED strips with 5mm LEDs. Would be a nice swap target. :slight_smile:

https://www.aliexpress.com/item/32841502474.html

You always find the weirdest stuff, Argo. :+1:

(yes i’m back from France again)