Nichia 219C 5000k D320 70 CRI Emitter output test by Texas_Ace, higher Vf then 90CRI version but a lot better output

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Texas_Ace
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Nichia 219C 5000k D320 70 CRI Emitter output test by Texas_Ace, higher Vf then 90CRI version but a lot better output

Here is another test and comparison for ya’ll.

You can see my 219C D250 90 CRI test here. Those LED’s came from the group buy that I was part of.

Today I am testing one of my 5000k D320 70CRI versions that I got from MTN as a comparison.

Same setup as all my other tests.

As you would expect the higher binned D320 version has a lot more output but interestingly it also has a noticeably higher Vf. This is not a bad thing really as the D260 version Vf is so low it pulls far too much current. I was getting upwards of 10A+ on a single cell! I now have to knock the duty cycle down on the lights that use the D260 to keep the current reasonable.

Overall this 5000k emitter is a very nice unit, great even color and tint with reasonable output as well. It is lacking in the reds naturally being a 70CRI emitter but it is one of the best 70 CRI emitters I have seen.

Basically just more interesting datapoints for people to look at.

Like usual click the image for larger version.

Edited by: Texas_Ace on 01/18/2017 - 11:14
djozz
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Nice results TA, it performs close to the best 3535 leds around, comparable to the 3rd gen. Oslon Square, a bit over the XP-G2 S4 2B, a bit under the XP-G3 S5 3bin. Also the voltages are close but this Nichia has the lowest of them all at 7A.

Texas_Ace
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Yeah, it is a very nice emitter for sure, well worth the minor loss in output over other 70CRI options. I have had these for awhile but forgot about them in my parts box and never really used them. I put one in a AAA Tool and it is quite nice.

Although I think you misread the chart, the 90+ CRI 219C’s from the group buy is the emitter with the lower Vf, and indeed it is the lowest Vf I have seen.

Like I said I was getting over 10A when I first tried them, we are now entering the era of Vf’s getting too low for FET drivers. Driver tech is going to have to improve although I just don’t see how we will get a buck driver to fit into a 17mm footprint. The new 21700 cells will most likely use 21mm drivers, this may be the wave of the future.

There is a small chance that you could fit a reasonably high current buck driver onto a 21mm driver.

Lexel
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It should not be a problem to add a R015 to R050 in series to the LED on the MCPCB to limit current for low Vf emitters

ImA4Wheelr
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Thanks Texas.  Really nice to have these test results available.

Mitko
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I aint in a worry about the low Uf issue, they will start raising it as soon as they start raising the bins numbers , we have seen it before Smile

Nichia 219C 5000k D320 – i made several S2 mini with those and several tripple X6: great results, the beam profile is ways better than G3 and even V6 especialy in X6, the tint is very good too( bought from Richard)

Unfortunately they cant be dedomed:/ with a dome on even at 7 amps they give like 65k cds in a C8 host,

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Some folks have been shaving 219cs with good success reported. I haven’t tried it myself so I can’t corroborate.

Mitko
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emarkd wrote:
Some folks have been shaving 219cs with good success reported. I haven’t tried it myself so I can’t corroborate.
Why do you have to shave anything when a good S4( even “improoved” ones, there are good bins) will give you 1300 lumens and 140k candelas in the same C8?
The old ones….aaah, i have a C8 in my Hall of flashlight fame that is doing 200k cds
Texas_Ace
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I shaved one of these by mistake actually and the beam profile is indeed a lot tighter. It is only a P60 drop in but it is noticeably tighter and more intense then my other P60’s with 219C’s.

gchart
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Hmm, how was the tint after slicing? And how close of a shave?

I’ve been using a ton of 219C’s lately… for pretty much everything besides throwers. Such a nice even tint, efficient, and inexpensive ([cough] XP-L [cough]). Love ‘em

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I have been using 219C’s in everything that is not a lumen or throw monster as well.

I shaved it pretty close but nothing super precise. I damaged the dome when installing the reflector so I just cut it off to make the beam usable.

Tint wise it seems “whiter” after the shave but that could be from it simply being a more intense beam. There is no odd tint shift though that is for sure.

gchart
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Thumbs Up And thanks for the nice charts.

I’d love to see this D320 graph overlaid with a XP-L V6 graph. Only other 219C graphs & comparisons I recall seeing are djozz’s which used a lower binned 219C. I’d of course expect a higher output, but also higher vF. I just love seeing things laid out visually.

Texas_Ace
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Wish granted:

gchart
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That’s awesome TA! I’m surprised that the vF’s are so close at lower currents.

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Cool, thanks Thumbs Up