[Reference] Nichia E17A/E21A (2000K - 6500K, R9050/R9080, color) CCT and tint shots

[id30209]

So the end of the tunnel looks brighter…)
Fingers crossed everything will go smoothly.
Oh and i agree with SKV89, can’t wait to light up E17’s

[iamlucky13]

Interesting to hear of an E17A-optimized board in the works. The logic makes sense, and if the E21A continues to be offered, then there’s not loss of existing choices.

Since your site currently lists the E17A’s as out of stock, I assume you’ll be getting more of those. Will that include high CRI versions in multiple color temperatures like you offer for the E21A?

Also, are you planning to stock more of the E21A red, green, blue, and amber emitters?

[clemence]

@iamlucky13

Interesting to hear of an E17A-optimized board in the works. The logic makes sense, and if the E21A continues to be offered, then there’s not loss of existing choices.

Since your site currently lists the E17A’s as out of stock, I assume you’ll be getting more of those. Will that include high CRI versions in multiple color temperatures like you offer for the E21A?

Also, are you planning to stock more of the E21A red, green, blue, and amber emitters?

Store just restocked, will update the inventory stock soon.
[Clemence]

[id30209]

So waiting for VR16SP4m…

[iamlucky13]

@clemence

Store just restocked, will update the inventory stock soon.
[Clemence]

Thanks! I see the store is already updated with a complete range of high CRI E17A.

Do you know if the E17A would be a better match for the Armytek optics that you have been selling?

I suppose if so, that question would be more relevant for the Tiara, as the Wizard seems like it would have high enough power it should use the E21A quadtrix regardless of how it pairs with the optic.

[clemence]

@iamlucky13

@clemence

Store just restocked, will update the inventory stock soon.
[Clemence]

Thanks! I see the store is already updated with a complete range of high CRI E17A.

Do you know if the E17A would be a better match for the Armytek optics that you have been selling?

I suppose if so, that question would be more relevant for the Tiara, as the Wizard seems like it would have high enough power it should use the E21A quadtrix regardless of how it pairs with the optic.

Armytek optic has 5,5mm aperture size. So a quadtrix E17A should fit with plenty of wiggle room. You’re right, its a better fit for Tiara (3A max). Wizard max current is about 2A. Although I haven’t tested VR16SP4m until they’re made, they should perform well up to 4A. The narrower gap at only 0,1mm will reduce it’s max over current capability for much better beam.

[Clemence]

[Aprilis]

@clemence

https://www.virence.com/single-post/2019/05/04/AppNote-190504—-Nichias-Esttool

Thanks.

@clemence

Well, there’s 4xE21A VR16SP4 for you guys don’t like E17A. You won’t believe me until it’s tested, totally understandable. Just think of it as XHP35 vs XHP50 and you would perhaps, get the idea. [Clemence]

So, will VR16SP4 still be available? Or is it a discontinued product that will be replaced by VR16SP4m?

@SKV89

I have the same feeling about 4xE17A vs 4xE21A. Despite the potential optic loss of the 4xE21A, it will still end up much brighter than the 4xE17A. Also on all of my modded 4xE21A lights, I need to use DC-Fix to smooth out the beam anyways and I believe the same is required for 4xE17A so I don’t think beam tuning is a big concern in most cases. Therefore, I think for any host that fits a 16mm mcpcb, the 4xE21A will always be brighter and more efficient than the 4xE17A version. I think where 4xE17A would shine is if it is used in a smaller mcpcb such as 13 or 14mm 3V only boards. There are a huge number of 16340, AA/14500, and some 18350/18650 lights where 16mm mcpcb is too large to fit and that is where the 4xE17A would be best put to use.

I agree with you. 4xE17A may be useful when you want to archive a tighter beam with more candelas or in smaller flashlights, but 4xE21A most likely will be brighter and more efficient even with current incompatible optics.

Some numbers from ESTtool(E21A 3500K and E17A 3500K):

[SKV89]

I’m quite surprised the E17A is not that far behind the E21A in terms of efficiency. If Clemence will ever make a 13mm board, I will buy a bunch. There’s so many AA/AAA/16340 lights I can think of that can use the 4xE17A

[Aprilis]

@SKV89

I’m quite surprised the E17A is not that far behind the E21A in terms of efficiency. If Clemence will ever make a 13mm board, I will buy a bunch. There’s so many AA/AAA/16340 lights I can think of that can use the 4xE17A

That depends on the current. On lower modes they are indeed very close(about 5% difference), except the fact that E17A has noticeably higher forward voltage, however on higher modes e.g ~700 lm E21A achieves 108 lm per watt while E17A only 93lm per watt and that’s already 16% which is not that small, at least for me, plus again higher forward voltage. Anyway, I’ll wait for the tests before drawing any conclusions.

[clemence]

UPDATE 191107: Color E17A beamshots added to the OP

[Clemence]

[Pavlo]

To the E21A and E17A fans, I need your opinion.

I will be modding 3 identical hosts with quad e17a virence board, and I can’t decide on which CCT’s to pick.
The max output with these hosts will be about 260 lumens using the e17a 9080 LEDs, with both floody and throwy optics.

I typically enjoy lights from 3000K to 5000K, but have never tried 2700K, and sometimes find 5000K too cool.
Any recommendations?

Option 1: 2700K, 3500K, 4500K
Option 2: 3000K, 4000K, 5000K
Option 3: 2700K, 4000K, 5000K

What are your favourite CCT’s with these leds?

[clemence]

2000K
4000K
5700K

[maukka]

Clemence sent me some E17As for testing, like all of them.

Go here for CRI results: Nichia E17A CRI test (integrated @ 350mA, 30 sec) - Album on Imgur

[malkoff_junkie]

thank you.

@maukka

Clemence sent me some E17As for testing, like all of them.

Go here for CRI results: Nichia E17A CRI test (integrated @ 350mA, 30 sec) - Album on Imgur

[clemence]

@maukka

Clemence sent me some E17As for testing, like all of them.

Go here for CRI results: Nichia E17A CRI test (integrated @ 350mA, 30 sec) - Album on Imgur

Thanks Mauri, looks like the results follow E21A closely.

[Clemence]

[iamlucky13]

Thanks for testing these!

It looks like somehow the 2000K was received in R9080 rank even though Clemence listed them on his site as R9050.

[Pavlo]

Thanks for the tests and happy to see they are as good as e21a!

[SKV89]

Maukka, thanks for the test! What kind of reflector or optic did you test them under?

[maukka]

Added a CIE chart for quick tint checking.

Additional observation: mixing 2700K+4000K in different ratios would result in the 3000K or 3500K emitters almost exactly. Same goes for 4000K + 6500K which results in the tint for 4500K and 5700K.

[maukka]

@SKV89

Maukka, thanks for the test! What kind of reflector or optic did you test them under?

Test was done integrated.