XM-L U2 on copper from led-tech.de

12 posts / 0 new
Last post
Bort
Bort's picture
Online
Last seen: 3 min 42 sec ago
Joined: 06/01/2012 - 17:15
Posts: 8901
Location: Holding the proverbial flashlight
XM-L U2 on copper from led-tech.de

http://www.led-tech.de/de/High-Power-LEDs-Cree/CREE-XM-Serie/CREE-XM-L-U2-auf-Kupferkernplatine-LT-1790_120_170.html

I would be interested in buying 2 or 3, is anyone else also interested?
They seem to be on sale, if you fiddle with the website you can get better pricing, when i went from the cart back to the page it was even cheaper, and the price keeps changing, i’ve seen from 5.something to 9.90 each
The problem is even with google translate, not everything converts to english, especially images with text in them.
If there is enough interest maybe one person could order a bunch and send them to forum members who want to buy them? Any takers, especially someone who can understand the german?

The Journal of Alternative Facts

"It is critical that there is a credible academic source for the growing and important discipline of Alternative Facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists."

 

phz
Offline
Last seen: 8 years 11 months ago
Joined: 12/12/2012 - 12:22
Posts: 4
Location: Northern Europe

What part is what you don’t understand? When I press that english flag on top part of the page, I get everything in english? Photos seem to have english translations as well for that product.

Steve_the_Chief
Steve_the_Chief's picture
Offline
Last seen: 3 years 2 months ago
Joined: 11/19/2011 - 06:12
Posts: 597
Location: Germany

If you need something translated... Wink

f42
Offline
Last seen: 6 years 2 weeks ago
Joined: 08/14/2012 - 21:15
Posts: 234

Tried to buy one and with shipping: Invoice amount: 18,76 €

These below are better options..

http://www.intl-outdoor.com/cree-xml-u3-1c-led-14mm-mcpcb-p-606.html
http://www.fasttech.com/products/1609/10001903/1137102-cree-xm-l-white-l...


Nationalism is an infantile disease. It is the measles of mankind.

Albert Einstein

ChiggerPepi
ChiggerPepi's picture
Offline
Last seen: 6 days 3 hours ago
Joined: 08/20/2012 - 19:32
Posts: 630
Location: Big Island, Hawaii

f42 wrote:
Tried to buy one and with shipping: Invoice amount: 18,76 €

These below are better options..

http://www.intl-outdoor.com/cree-xml-u3-1c-led-14mm-mcpcb-p-606.html
http://www.fasttech.com/products/1609/10001903/1137102-cree-xm-l-white-l...

Yeah, but they’re not on copper. Sad

I do want a few, but I’d rather hold out for the XM-L2 on copper.

Bort
Bort's picture
Online
Last seen: 3 min 42 sec ago
Joined: 06/01/2012 - 17:15
Posts: 8901
Location: Holding the proverbial flashlight

f42 wrote:
Tried to buy one and with shipping: Invoice amount: 18,76 €

These below are better options..

http://www.intl-outdoor.com/cree-xml-u3-1c-led-14mm-mcpcb-p-606.html
http://www.fasttech.com/products/1609/10001903/1137102-cree-xm-l-white-l...


This is why i think this is the best option
Quote:
Another special feature is the direct contact of the LED based on copper. This connection is possible through a special opening in the dielectric and once again increasing the efficiency of the board.

These graphs convince me this is a superior way to use this LED
XM-L U2

XM-L U2 on copper

Mind you i would also like to get the XM-L2 on this board, but do we know if it will be offered?
This has a high shipping cost, hence my idea of one person ordering a bunch.

The Journal of Alternative Facts

"It is critical that there is a credible academic source for the growing and important discipline of Alternative Facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists."

 

MosesM
MosesM's picture
Offline
Last seen: 9 months 6 days ago
Joined: 06/28/2012 - 07:32
Posts: 160
Location: Singapore

I bought two a couple of months back and they are definitely the best XM-L MCPCBs you can get at the moment.

Considering how long it took them to put up XP-G2s for sale (which just appeared over the past few days), I’d guess that they won’t have the XM-L2 on that MCPCB for at least a couple of months (that is if they decide to offer it, which they should :bigsmile: ).

Another option for copper MCPCBs is at Niviss , though I’m quite sure there is still a dialectric layer under the thermal pad, so it’s performance still won’t be as good as led-tech.de’s copper MCPCB. Also, they are based in Poland so shipping will still probably be killer.

f42
Offline
Last seen: 6 years 2 weeks ago
Joined: 08/14/2012 - 21:15
Posts: 234

ChiggerPepi wrote:
f42 wrote:
Tried to buy one and with shipping: Invoice amount: 18,76 €

These below are better options..

http://www.intl-outdoor.com/cree-xml-u3-1c-led-14mm-mcpcb-p-606.html
http://www.fasttech.com/products/1609/10001903/1137102-cree-xm-l-white-l...

Yeah, but they’re not on copper. Sad

I do want a few, but I’d rather hold out for the XM-L2 on copper.

Bort wrote:

This is why i think this is the best option
Quote:
Another special feature is the direct contact of the LED based on copper. This connection is possible through a special opening in the dielectric and once again increasing the efficiency of the board.

These graphs convince me this is a superior way to use this LED
XM-L U2

Mind you i would also like to get the XM-L2 on this board, but do we know if it will be offered?
This has a high shipping cost, hence my idea of one person ordering a bunch.

I agree with you both, I want a few of these too, but it is very expensive.

1pcs XM-L U2 on copper pcb for $25, nearly as expensive as a decent flashlight.

Also, I do not really want to drive these beautiful leds Love over 3500 mA even if they are on copper or not Smile


Nationalism is an infantile disease. It is the measles of mankind.

Albert Einstein

charlestt
Offline
Last seen: 5 years 6 days ago
Joined: 01/16/2010 - 09:05
Posts: 664
Location: Bristol UK

i’m using 3 of these i’m my tripple mag build and i have to say they are very nice, very good quality.

 

 

 

 http://i776.photobucket.com/albums/yy41/charlestt225/Sig/A1200023-1.jpg" width="159" he

Match
Match's picture
Offline
Last seen: 6 years 2 months ago
Joined: 11/14/2010 - 11:57
Posts: 1488
Location: South Carolina, USA

Interesting....their copper mounted output graph matches my results earlier this year quite closely....

MRsDNF
MRsDNF's picture
Offline
Last seen: 5 months 1 day ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Match wrote:
Interesting....their copper mounted output graph matches my results earlier this year quite closely....

Were we ever meant to doubt your results? You are the man Match. (I assume you are a guy).

 

 

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

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Bort
Bort's picture
Online
Last seen: 3 min 42 sec ago
Joined: 06/01/2012 - 17:15
Posts: 8901
Location: Holding the proverbial flashlight

Match wrote:

Interesting….their copper mounted output graph matches my results earlier this year quite closely….


Your right, i never compared them, but i thought you ground off the back of your emitter before installation and testing?

The Journal of Alternative Facts

"It is critical that there is a credible academic source for the growing and important discipline of Alternative Facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists."