emitter test: Nichia 219B V1 4000K 93CRI

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djozz
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emitter test: Nichia 219B V1 4000K 93CRI

Christmas eve, a moment as great as any moment for posting an emitter test Smile

I do emitter tests every now and then, but which emitters I test has a bit of randomness in it: I try to find leds that seem promising for flashlight use, but there are many more leds than I am prepared to test, and some very interesting leds are just not available in small quantities. And sometimes leds are just not tested for no good reason, even though they were interesting enough when they became first available, like this V1 of the Nichia 219B. It comes in 90+CRI like the first 219B, and people have found that it has a lower Vf than the first 219B, comparable to the 219C. So here's, a bit late to the party, my test anyway, of the 4000K 93CRI (D200 bin) version obtained from Illumn.com because I like to use that one for a triple and want to know the full picture before the build. I hesitated buying them because of their high shipping costs, but then three leds were very kindly gifted to me by THE_dAY, thanks!

The test was done like I described in detail in my XP-L test. In summary: 1) just one led was tested, 2) I used my larger version II integrating sphere with much higher quality luxmeter, but that should not matter for results, 3) the output numbers and voltages were measured with the led close to 'steady state' for each current, so warmed up and settled, you should be able to get these numbers in a well heatsinked flashlight. Mind that these are output numbers of the bare led, in a flashlight there will be losses from light obstructions, lens and optic, 4) output is in 'djozz-lumen' defined as 1/550 of the output of my Sunwayman D40A on high setting, which I hope is close to the real lumen, but at least is consistent over all my emitter tests done in integrating spheres.

Here are the results. In the same graph are the results of three other emitter tests that I had done and posted about earlier and are nice for comparison: the first Nichia 219B 92CRI 4500K (close to 5000K actually), the Nichia 219C 83CRI 5000K (D280 bin), and the gen.2 Osram Oslon Square 4000K 92CRI (see my signature line link for the original tests).

 

 

What can be seen in the graph is:

*the current at which the maximum output of the V1 is reached is not much different than the first gen. 219B, indicating that the thermal resistance has not much changed.

*the output is also not clearly improved compared to the first 219B, although here a 4000K led is compared to an almost 5000K led, which is not 100% apples to apples.

*the voltage of the V1 has significantly lowered, as was found earlier by others as well, at 3A by 0.22V for the respective leds that were measured. This is very good for use in single li-ion flashlights, it allows good regulation of the output over the runtime of the battery.

*the Nichia 219C is in a different league than the 219B V1, perhaps not in output at lower currents (we will not know the output of a 4000K 93CRI 219C until it hits the market) but in thermal resistance, giving it a higher maximum at a much higher current.

*the gen.2 Oslon Square that is also 4000K and 92CRI, like the Nichia tested in this post, has a better output and lower thermal resistance, it performs better than the Nichia 219B V1. A concern for some may be that the tint of the Oslon is less rosy than the Nichia, but that is a matter of preference.

 

Conclusion.

I like the lower Vf of the V1, it will help the output in the triple that I'm going to build (direct drive with a 18350 battery). I hoped that the output and thermal resistance also had improved somewhat compared to the first gen. 219B, but that seems not so much the case. So the wait is still for the 219C in 90+CRI, for a new level of performance, although I do not expect it to be that much better than the tested high CRI Oslon Square.

Merry Christmas to you all!

Edited by: djozz on 12/25/2015 - 02:52
ReManG
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Hmmmmm, are we just splitting hairs here? I don’t mean your testing Djozz,that is outstanding as always… We have moved to a “which high CRI Led should I pick?” When none of them actually look bad…. I mean it is a first world problem, and one I will ponder over.. But could you have imagined five years ago the CRI and output of any of these?

Thanks again for your great testing Djozz, and a merry Christmas to all…

djozz
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No indeed, five years ago I was lyrical over my first led flashlight with 60 lumen Luxeon, still have it in a drawer Smile Now I'm worried that the 219B V1 triple shorty that I'm going to build is not getting past 1200 lumen Undecided

I'm thankful to be able to devote some of my time to first world problems. Smile

THE_dAY
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Thanks for the testing djozz!

Can you possibly add to your review that these 4000K are binned D200.
I believe your early 4500K(5000K) were binned D220 and your 219C binned D280.

Here is Nichia binning chart

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Well… Not the results I was hoping for.

By your wording, have you heard that Nichia is indeed doing a 90+ cri 219c? Last I heard that was scrubbed

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Thanks THE_dAY for the bin table, I added the bins to the OP.

@pilotdog68: I have no news about a 90CRI 219C, I just hope they will dio them sometime.

chouster
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Thanks a lot for this test, Djozz.

The highest spec’ed R9050 B-V1 is D240, so that one should sit in between the B-V1 and C you’ve tested, output-wise. But then, first you’d have to find some…

EDIT: Guys, those Jaxman lights at fasttech and their aliexpress store appear to be NVSx219B-V1 R9050 sw40/sw57. D220 for the sw57.

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Thanks djozz.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

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djozz
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chouster wrote:
Thanks a lot for this test, Djozz. The highest spec'ed R9050 B-V1 is D240, so that one should sit in between the B-V1 and C you've tested, output-wise. But then, first you'd have to find some... EDIT: Guys, "those Jaxman":http://www.jaxman.net/content/?220.html lights "at fasttech":https://www.fasttech.com/search?jaxman%20nichia and "their aliexpress store":http://de.aliexpress.com/store/group/High-Color-Rendering-Lights/1812094... appear to be NVSx219B-V1 R9050 sw40/sw57. D220 for the sw57.

I did not know that Fasttech carried the Jaxman lights now (was my suggestion in their thread), that is good news! I will order an E2 Smile 

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Nice review.
Thanks.

Gunga
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This LED is definitely my favourite tint even if it’s not as efficient as a 219C.

chouster
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I think I can confirm that the emitters in those Jaxman lights are NVSx219B-V1, indeed. They sent me a few LEDs. I thought I’d have to mount and test them for low Vf to confirm it, but a nice and clever member of TLF found a way to tell apart bare 219B’s and 219B-V1’s (thanks again Megalodon). Should I spoil it or give you guys some time to find out for yourselves?

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Spoil it, spoil it!

djozz
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I feel challenged here, but I'm not at home to check them, aaarrrgghh! Yell.

 

chouster
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There are small differences in the footprints.

pilotdog68
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Interesting. I guess that’s a good way to tell a 219B from a V1

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chouster
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Exactly, PD. Should also work when emitters are mounted already.

THE_dAY
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Chouster, thanks for sharing the helpful tip!

chouster
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Of course, with pleasure if someone finds it useful.

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I’m pretty sure I’ve got a bunch of nichia B around for some time. I’m going to dig them up and have a look.

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Is there anyone who could build a copper p60 drop in with a 219b v1 93 cri 4000k ?.
Thanks.
For a solarforce l2d.

Malkoff !

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chouster wrote:
There are small differences in the footprints. !{width:95%}http://abload.de/img/nichias6ssrm.jpg!:http://abload.de/uploadComplete.p...

I may be missing something here, but what is the difference between the B V1 and 219C, other than the colored pads?

You don't really need a parachute to skydive. But you DO need one if you want to skydive twice!

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Thank you for all your time testing LEDs djozz!

chouster
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Lonelydad wrote:

chouster wrote:
There are small differences in the footprints. may be missing something here, but what is the difference between the B V1 and 219C, other than the colored pads?

They are totally different in appearance, so you don’t need to distinguish them from their solder pads. A and B also looks quite different. It’s just the B and B-V1 that look very similar apart from the solder pads.

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I hope this isn’t a longshot, but does anyone have some solid beamshots of the “Nichia NVSL219BT-V1 4000K, 93 CRI, D200 Bin” versus the 219C that RMM carries?

I realize this is asking for 4000K vs. 5000K beamshots, but I’m trying to decide on what to get in a triple

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djozz
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tobrien wrote:
I hope this isn’t a longshot, but does anyone have some solid beamshots of the “Nichia NVSL219BT-V1 4000K, 93 CRI, D200 Bin” versus the 219C that RMM carries?

I realize this is asking for 4000K vs. 5000K beamshots, but I’m trying to decide on what to get in a triple

I do not have those comparison beamshots, but I think the beam shape of the 219b v1 and 219c will not be very different, so a beamshot will not capture the difference. What is different is the output (the higher the current, the bigger the difference), and the colour reproduction, both is difficult to catch in a picture.

tobrien
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djozz wrote:
tobrien wrote:
I hope this isn’t a longshot, but does anyone have some solid beamshots of the “Nichia NVSL219BT-V1 4000K, 93 CRI, D200 Bin” versus the 219C that RMM carries?

I realize this is asking for 4000K vs. 5000K beamshots, but I’m trying to decide on what to get in a triple

I do not have those comparison beamshots, but I think the beam shape of the 219b v1 and 219c will not be very different, so a beamshot will not capture the difference. What is different is the output (the higher the current, the bigger the difference), and the colour reproduction, both is difficult to catch in a picture.


gotcha, thank you sir!

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Sorry CD50, missed your post. I find the 4000K clearly warmer tinted than the 4500K. This is also because 4000K is my personal maximum acceptable colour temperature so I’m sensitive in this region. The V1 can easily be run at 2A, especially if you use a ledboard that has a direct thermal connection to the core (DTP, some brands are Sinkpad, Noctigon, Maxtoch).