Nichia 219B 4500k D220 9080 CRI Emitter output test by Texas_Ace; Amazing tint and CRI! Output is what you would expect.

I just noticed that both 219B and 219C exceed the rated lumen output

- 219C 9050 specced 240lm 700mA; Tex's test: ~255lm 700mA

  • 219B 9080 specced 220lm 700mA; Tex's test: ~230lm 700mA

It’s a good thing

Yes, I think the D240 rated emitters are actually D260, the spec sheet says they exist.

The D220 are technically within the margin of error for a D220 IIRC but also keep in mind my sphere is not perfect, just as good as I can get it.

Hmm, yes, don’t trust our BLF calibrations. The limited chance I had sofar to compare different people’s calibrations, while I expected maybe 4 or 5, it was more like 20 to 25. A humbling find!!

This might come in handy:
http://www.nichia.co.jp/en/product/sled.html

Those were mentioned before but it was guesstimated they would be hundreds of dollars at the cheapest.

Let me check it. If it’s not that expensive, I might buy it. So you guys can passaround it to calibrate each sphere

I have been drooling over those when they came out last year

Calibrated components always costs at least an arm and a leg… :open_mouth:

Unfortunately they do not solve the spectral errors of our luxmeters :frowning: , but they give a better absolute output reference than a couple of ANSI-rated flashlights.

Im planning buy some of this leds (when available) and build a single and a triple.

Anyone know whats the best way to proceded in DD with this led?

I know that the best is to stay around 3-3,75 Amps. Max 4. So… 10 to 12 amps in triple.

So, whats the best configuration for stay in this margen at 10-11-12 amps?

For wire i think that 22awg its the way (not 20awg)
For driver spring i think that steel (default convoy) without bypass.
For tailcap spring i think that steel (default convoy) without bypass.

And finally for the cell ncr18650ga? 30q will be too much? vtc6?

Any info?

Open to opinions :wink:

I built a triple with these awhile back and just did it like any other triple. I think I used 22awg. I have no issues with it over driving the LED’s since the Vf on them is pretty high.

Hi, i have some question
you measured the AMPS at max?
You bypass or not bypass the springs?
Cell?

Thanks for your help! :slight_smile:

Yeah, I forgot what the messured amps were but they were not anything to worry about, around 10 amps IIRC. I generally use GA’s in my personal lights but I generally test with 30Q. Either way it should not be an issue with a triple. Even if they are overdriven some it will not hurt then and it will quickly drop as the battery drains.

Where can these LEDs be purchased?

Last I knew they were out of production but maybe Clemence has managed to get more? I have not been keeping up with his stuff lately.

Maybe somewhat unrelated but some nice high-CRI Osram Oslon emitters can be bought at pargos-shop.

Hope I can try some in a near future.

Cheers ^:)

Got a link to a specific item? I just seen 1400 listing of random electrical components.

First of all thanks for your help. You not mentioned but i supose that the 10 amps (aprox) is with bypasess springs right? I think i will go with 22awg and phosphor bronze springs for driver and for the tail. And lets see whats the measurements are. Probably stay in 8-9 amps and thats will be perfect because from 9 to 12 ( in this led) its not much gain in lumens but more heat.

What do you think?

I think that it is not worth overthinking it.

I learned early on that you can’t even see the difference between minor changes and even some major changes with the human eye. So why stress out over it.

For example going from 2.5A to full 6A turbo on an XP-L is hardly noticeable in the real world unless you see it side by side.

I would just build it with whatever fits and works in the host the best and then enjoy the results.

You won’t kill the LED’s regardless in a triple setup with a good thermal path which is the most important thing.

You are right, the thermal pach should be ok (convoy c8)

Thanks for your help.