XM-L bare emitters now available from Kaidomain

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charlestt
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XM-L bare emitters now available from Kaidomain

 

 

 

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

Kokopelli
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They've been there for some time. There are also bare boards for these bare emitters.

charlestt
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Kokopelli wrote:

They've been there for some time. There are also bare boards for these bare emitters.

But i only saw them today Cool

 

 

 

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

Nautic
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I bought one and have ordered another http://www.budgetlightforum.cz.cc/node/1101#comment-16999

Can recommend it!

Cheap quality is good - Expensive crap isn´t

pipopopo
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Anyone tips on how to solder/glue these on a heatsink?

Should be hard because of the +- pads on the bottom; or is it possible to disable them by cutting the corners.

Kokopelli
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You'll also need aluminum boards for XM-L leds like these. To solder these kinds of surface mount components, reflow soldering is used. A paste solder like Mechanics/Lodestar is spread on the plate just to cover the pads area. Then you place the emitter onto this board and the paste should help holding the emitter still. The board and emitter is heated together to something like 240-260 degrees Celcius and the solder melts and fixes the emitter in place.

Many people seem to use a temperature controlled grill/oven as a cheap solution for this. Better is to have a reflow station.

pipopopo
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humm, thanks  reflowing is not going to happen too much work and poisones lead all over the place.

I think I will just solder on top of the led and gleu the led onto the copper disc with non elec. conductive glue

(artic allum. compound)

I just hope there is enough heat transfer?!

charlestt
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pipopopo wrote:

humm, thanks  reflowing is not going to happen too much work and poisones lead all over the place.

I think I will just solder on top of the led and gleu the led onto the copper disc with non elec. conductive glue

(artic allum. compound)

I just hope there is enough heat transfer?!

 

Thats works fine for me on my SST-50

 

 

 

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

Kokopelli
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It's just XML's contacts are at the bottom and you may have to solder to these points. Cutter sells 14mm stars, KD and DX has 16mm and 20mm stars. It may be easier to just buy from Cutter.

 

I don't have much reflowing experience but I already bought those bare stars from KD and some paste solder. In my case, it is a bit more difficult because I am planning to take out an emitter from a 20mm star and transfer to these unknown diameter but looking small stars. I plan to try this with some cheap leds first. Youtube has some good DIY videos for reflow soldering, none requiring expensive equipment.

pipopopo
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It's just XML's contacts are at the bottom and you may have to solder to these points. Cutter sells 14mm stars, KD and DX has 16mm and 20mm stars. It may be easier to just buy from Cutter. 

Thanks, There are also contacts at the top (corners) I have tried, it works (it is not mentioned in the Cree pdf last time I checked)

I just notice that KD is also selling the XM-L in a less green tint (1A) on a star.

Not that I disliked the (1D) tint but prefer a bit more red.

Cutter is, I believe, only feasible in larger quantities because of the shipping costs

 

 


sixty545
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pipopopo wrote:

I just notice that KD is also selling the XM-L in a less green tint (1A) on a star.

Not that I disliked the (1D) tint but prefer a bit more red.

Cutter is, I believe, only feasible in larger quantities because of the shipping costs

Bins 1A and 1D both lie on the black body curve and thus have no greenish or purplish tint. The difference between them is that 1A (6500K-7000K) is a little more bluish than 1D (6100K-6500K).

pipopopo
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I have a XM-L 1A led and I think it is a bit greenisch (not like wolf urine like in my Fenix L2D flashlights)

edit changed bin type

ledoman
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@ pipopopo Where did you purchase 1D tint and on what star? Is it from DX? I'm just thinking about that one.

pipopopo
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Sorry that must have bin wishfull thinking

It was a 1A tint on a 16 mm star from Kaidomain

http://www.kaidomain.com/ProductDetails.aspx?ProductId=11130

You can get 1D 16mm from DX

http://www.dealextreme.com/details.dx/sku.50599

ledoman
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Sorry, yes I must be dreaming Wink It was late......

ledoman
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Sorry, yes I must be dreaming Wink It was late......

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 they get no more of my money ..  jerks

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