We would have to know if both pads are doing the heat transfer to the star.
if so, one could solder the LED on 2 half circles of copper and then put electrical isolation between it and the pill.
That way you have direct thermal path to the star and a big surface with maybe kapton film and some goo on the star.
This way you can avoid the fuss of re-designing the host flashlight.
.
[EDIT]
Just learned that 90% of the heat transfer is through the cathode.
But i think it’s a good option to isolate the star from the pill, not the LED from the star.
[/EDIT]
How does a 0,04 °C•cm2/W thermal resistance with 17 Watt/m•K thermal conductivity appeal to you?
It’s far lower than the thermal resistance between LED die – solder point
We would have to know if both pads are doing the heat transfer to the star.
if so, one could solder the LED on 2 half circles of copper and then put electrical isolation between it and the pill.
That way you have direct thermal path to the star and a big surface with maybe kapton film and some goo on the star.
This way you can avoid the fuss of re-designing the host flashlight.
.
[EDIT]
Just learned that 90% of the heat transfer is through the cathode.
But i think it’s a good option to isolate the star from the pill, not the LED from the star.
[/EDIT]
How does a 0,04 °C•cm2/W thermal resistance with 17 Watt/m•K thermal conductivity appeal to you?
It’s far lower than the thermal resistance between LED die – solder point
Check this link.…
Judging by the way you say it, it’s probably pretty good
I’m not familiar with those technical terms and units.
But i gather it’s better than the usual ‘seal pads’ used for power transistors etc.
Now the question is; #1 where can we buy the new Nichia LEDs? #2 Where can we buy FujiPoly XR-m?
I plan to buy one full reel (3500 pcs) of them for my near future project. That's why Nichia sent me several samples to test. Nichia is very strict about MOQ to me, It doesn't even let me buy 500pcs. It will be available in Q1 2017. Still waiting for my Fujipoly.....
The plan is to use only the 3000K and 5700K. Yes, the 9050 is my target. If I needed lower CRI, I would go with XHP50 instead, easier on thermal design. No, it’s not for an e-shop, I have residential & shop display lighting projects here. But why not? if I could get some extras from bare emitter sale online, then I’ll do it.
Still working to get less than 500 pcs though.
If you could get some in ~4500k I would grab some for sure (assuming they work good after testing). 3000k is a bit too warm for a flashlight and 5700k a bit too cool. I have come to the conclusion that 4000-5000k is my personal sweet spot.
Obviously this is only if you could get a few extras tossed into your order (I am sure others would buy as well), I do not even remotely expect you to change your planned tints.
If you could get some in ~4500k I would grab some for sure (assuming they work good after testing). 3000k is a bit too warm for a flashlight and 5700k a bit too cool. I have come to the conclusion that 4000-5000k is my personal sweet spot.
Obviously this is only if you could get a few extras tossed into your order (I am sure others would buy as well), I do not even remotely expect you to change your planned tints.
Let’s see if I can get mixed CCT with the same MOQ =)
If you could get some in ~4500k I would grab some for sure (assuming they work good after testing). 3000k is a bit too warm for a flashlight and 5700k a bit too cool. I have come to the conclusion that 4000-5000k is my personal sweet spot.
Obviously this is only if you could get a few extras tossed into your order (I am sure others would buy as well), I do not even remotely expect you to change your planned tints.
Let’s if I can get mixed CCT with the same MOQ =)
If you could mix the tints a bit I am positive there would be some level of demand for some neutral tint versions with high CRI. How much only depends on the results from testing.
If Djozz could manage to keep a 12V 5700K one alive, i’d be very interested.
…actually also very interested in a 3000K one…
(but i’m probably not the only one..)
Good news guys!
I just spoke to Nichia sales person, and I can mix the CCT and voltage for my next order. Hooray
Please vote your preferred CCT and voltage in my recent poll
Sounds good! Have you asked about the 219c 90+ CRI versions that are supposed to be released now? Seems they are available up to 4500-5000k? according to the data sheet, if you can mix and match I know there are a lot of people that would like some 90+ CRI 219C’s.
Sounds good! Have you asked about the 219c 90+ CRI versions that are supposed to be released now? Seems they are available up to 4500-5000k? according to the data sheet, if you can mix and match I know there are a lot of people that would like some 90+ CRI 219C's. Link to poll?
No, it's confirmed that the 219C Ra9050 only available in 3000K. If you look at the website the rest of the CCT only available in Ra8000. (corrected by Maukka). I asked my local Nichia representative
Sounds good! Have you asked about the 219c 90+ CRI versions that are supposed to be released now? Seems they are available up to 4500-5000k? according to the data sheet, if you can mix and match I know there are a lot of people that would like some 90+ CRI 219C’s.
Link to poll?
No, it’s confirmed that the 219C Ra9050 only available in 3000K. If you look at the website the rest of the CCT only available in Ra8000.
Sounds good! Have you asked about the 219c 90+ CRI versions that are supposed to be released now? Seems they are available up to 4500-5000k? according to the data sheet, if you can mix and match I know there are a lot of people that would like some 90+ CRI 219C’s.
Link to poll?
No, it’s confirmed that the 219C Ra9050 only available in 3000K. If you look at the website the rest of the CCT only available in Ra8000.
No, it’s confirmed that the 219C Ra9050 only available in 3000K. If you look at the website the rest of the CCT only available in Ra8000.
Oh well, it was worth a shot. Depending on price I would still be down for some 219’s as well though, I am really liking tint mixing lately and 80+ CRI tint mixed lights look quite good as well.
A little more 144A info: - Emitting area: 4x4mm (16mm2) - same configuration as a XHP35 (with lower forward voltage)? - Aluminium Nitride substrate (285 W/(m·K)) - Gold contacts
Quote:
Distributor of the brand Nichia in Italy, *Welt Electronic* presents the new multichip series 144A. Nichia, a company of the first magnitude in the products Mid Power and High Power, deals with the application market outdoor, street and tunnel lighting, with a multichip Super Hight Power consists of four chips of 2 mm2, close to each other and arranged in a square: a plus optically unequaled.
These are the characteristics of the series 144A: Aluminium Nitride substrate, a component that increases the efficiency and lowers the thermal resistance; Nichia Flip - Chip technology, which eliminates the process of wire bonding as a connection between the anode and cathode, presents a critical element in less than the technologies adopted by other manufacturers; gold electrodes, which allow not to decay in application, because it is completely free from corrosion in an environment saturated
Alumininium nitrite looks like the way to go creating a board for mounting these.. it should be reasonably cheap to have someone make a bunch of 16 and 20mm disks... then glue two pieces of copper sheet to the top to act as electrodes. Done.
Sounds good! Have you asked about the 219c 90+ CRI versions that are supposed to be released now? Seems they are available up to 4500-5000k? according to the data sheet, if you can mix and match I know there are a lot of people that would like some 90+ CRI 219C’s.
Link to poll?
No, it’s confirmed that the 219C Ra9050 only available in 3000K. If you look at the website the rest of the CCT only available in Ra8000.
This pdf states 2700, 3000, 3500, and 4000K available as 9050.
You’re right. I edited my post. Well maybe other Nichia distributors have it. I asked the Sout East Asia distributor in Singapore via Indonesian representative.
A little more 144A info: - Emitting area: 4x4mm (16mm2) - same configuration as a XHP35 (with lower forward voltage)? - Aluminium Nitride substrate (285 W/(m·K)) - Gold contacts
Quote:
Distributor of the brand Nichia in Italy, *Welt Electronic* presents the new multichip series 144A. Nichia, a company of the first magnitude in the products Mid Power and High Power, deals with the application market outdoor, street and tunnel lighting, with a multichip Super Hight Power consists of four chips of 2 mm2, close to each other and arranged in a square: a plus optically unequaled.
These are the characteristics of the series 144A: Aluminium Nitride substrate, a component that increases the efficiency and lowers the thermal resistance; Nichia Flip - Chip technology, which eliminates the process of wire bonding as a connection between the anode and cathode, presents a critical element in less than the technologies adopted by other manufacturers; gold electrodes, which allow not to decay in application, because it is completely free from corrosion in an environment saturated
Alumininium nitrite looks like the way to go creating a board for mounting these.. it should be reasonably cheap to have someone make a bunch of 16 and 20mm disks... then glue two pieces of copper sheet to the top to act as electrodes. Done.
This pdf states 2700, 3000, 3500, and 4000K available as 9050.
You’re right. I edited my post. Well maybe other Nichia distributors have it. I asked the Sout East Asia distributor in Singapore via Indonesian representative.
When I’m back home I can do a test on the 219C 3000K R9050 that clemence has sent. I may also wait for the 4000K R9050 that will come from Rey shortly. But not both, that seems not meaningful because the output, current and voltage behaviour will be similar.
And for that matter the test will not differ much from the 5000K 83 CRI version that I tested last year I guess, same voltage curve and same output curve but shifted a bit vertically because the output bins of the high CRI versions are lower.
I can get the 219C 4000K Ra9050. It’s available now
Very nice, if you can get these for a good price I would get a few, I do prefer 4500k myself so it would keep me from stocking up.
No 4500K available based on the data sheet. The 9050 only available from 2700K-4000K, the rest is Ra8000 max.
The sell price is approximately the same as the other sellers here, also quantity sensitive.
I can’t beat China based seller since the courier services are extremely cheap there. For small order quantity they’re your best bet.
I can get the 219C 4000K Ra9050. It’s available now
Very nice, if you can get these for a good price I would get a few, I do prefer 4500k myself so it would keep me from stocking up.
But it’s possible to arrange several stocker points to save shipping cost. For example: US, Europe, and Asia representatives hahahaha
We could start a www.Budgetroniclightings.com then
I really look forward to check out the results of those 4000-5000K R9050s.
Gonna be exciting to have torches with 1K+ continuous operation Rolls-Royce luminous flux.
Cheers
The Light
I am
FIXED: How to properly insert images into your posts without breaking the forum page layout
How does a 0,04 °C•cm2/W thermal resistance with 17 Watt/m•K thermal conductivity appeal to you?
It’s far lower than the thermal resistance between LED die – solder point
Check this link.
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
2Q19
Now the question is; #1 where can we buy the new Nichia LEDs? #2 Where can we buy FujiPoly XR-m?
I plan to buy one full reel (3500 pcs) of them for my near future project. That's why Nichia sent me several samples to test. Nichia is very strict about MOQ to me, It doesn't even let me buy 500pcs.
It will be available in Q1 2017. Still waiting for my Fujipoly..... 
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
Wow, a full reel?
Gonna open some e-shop? 
Hope you'll be getting some R9050s.
Cheers
The Light
I am
FIXED: How to properly insert images into your posts without breaking the forum page layout
The plan is to use only the 3000K and 5700K. Yes, the 9050 is my target. If I needed lower CRI, I would go with XHP50 instead, easier on thermal design. No, it’s not for an e-shop, I have residential & shop display lighting projects here. But why not? if I could get some extras from bare emitter sale online, then I’ll do it.
Still working to get less than 500 pcs though.
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
If you could get some in ~4500k I would grab some for sure (assuming they work good after testing). 3000k is a bit too warm for a flashlight and 5700k a bit too cool. I have come to the conclusion that 4000-5000k is my personal sweet spot.
Obviously this is only if you could get a few extras tossed into your order (I am sure others would buy as well), I do not even remotely expect you to change your planned tints.
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
Let’s see if I can get mixed CCT with the same MOQ =)
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
If you could mix the tints a bit I am positive there would be some level of demand for some neutral tint versions with high CRI. How much only depends on the results from testing.
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
If Djozz could manage to keep a 12V 5700K one alive, i’d be very interested.
…actually also very interested in a 3000K one…
(but i’m probably not the only one..)
[edit]
6V is fine too.
[/edit]
2Q19
Good news guys!
I just spoke to Nichia sales person, and I can mix the CCT and voltage for my next order. Hooray
Please vote your preferred CCT and voltage in my recent poll
POLL LINK
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
Sounds good! Have you asked about the 219c 90+ CRI versions that are supposed to be released now? Seems they are available up to 4500-5000k? according to the data sheet, if you can mix and match I know there are a lot of people that would like some 90+ CRI 219C’s.
Link to poll?
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
POLL LINK
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
https://www.nichia.co.jp/specification/products/led/NVSL219C-E.pdf
This pdf states 2700, 3000, 3500, and 4000K available as 9050.
I know, asked for it many times. And the answers always negative. I just called him yesterday.
Still not ready yet. They said “maybe” next year
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
Oh well, it was worth a shot. Depending on price I would still be down for some 219’s as well though, I am really liking tint mixing lately and 80+ CRI tint mixed lights look quite good as well.
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
Non-oxide Ceramics – Aluminum Nitride (AlN): Ceramic Material with Very High Thermal Conductivity @ CeramTec
Who's gonna request a quote for a big box of standard 16 and 20mm boards with multiple wire contact points and thick copper traces to these guys?
Cheers
Original posted on: Tue, 10/11/2016 - 20:09; typo fixup.
The Light
I am
FIXED: How to properly insert images into your posts without breaking the forum page layout
You’re right. I edited my post. Well maybe other Nichia distributors have it. I asked the Sout East Asia distributor in Singapore via Indonesian representative.
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
Interesting material....You go (buy) first, I'll follow
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
Also the Reylight Pineapple is supposed to be 219C 4000K R9050.
GOOD NEWS!!!
I can get the 219C 4000K Ra9050. It’s available now
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
You mean like these?
http://budgetlightforum.com/node/49996
I couldn’t find the CRI of them for certain, i think it’s 92 (?)
2Q19
Very nice, if you can get these for a good price I would get a few, I do prefer 4500k myself so it would keep me from stocking up.
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
I can’t wait to see the test results.
The low mode should be lower.
Reviews: Efan IMR18350 700mAh 10.5A, <a href="http://
The 144A test results? Djozz output test here and maukka CRI test here.
When I’m back home I can do a test on the 219C 3000K R9050 that clemence has sent. I may also wait for the 4000K R9050 that will come from Rey shortly. But not both, that seems not meaningful because the output, current and voltage behaviour will be similar.
And for that matter the test will not differ much from the 5000K 83 CRI version that I tested last year I guess, same voltage curve and same output curve but shifted a bit vertically because the output bins of the high CRI versions are lower.
link to djozz tests
No 4500K available based on the data sheet. The 9050 only available from 2700K-4000K, the rest is Ra8000 max.
The sell price is approximately the same as the other sellers here, also quantity sensitive.
I can’t beat China based seller since the courier services are extremely cheap there. For small order quantity they’re your best bet.
- Clemence -
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
But it’s possible to arrange several stocker points to save shipping cost. For example: US, Europe, and Asia representatives hahahaha
We could start a www.Budgetroniclightings.com then
www.virence.com
Nichia Esttool [Nichia LED calculator] - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium
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