Mounting LED To Larger MCPCB/Star

Bigpal

Enlightened
Joined
Jun 8, 2010
Messages
234
Hey everyone,
I have some spare XM-L neutral LEDs - bare emitters. I also have some boards that will not accomodate them because they are too large. I'm wondering if there is something that will bridge the gap so I can use these 2 together.

Reflow soldering is not a problem. I'm sure you know, the bottom of the emitter is laid out exactly like the mcpcb, just smaller. Here is the emitter and the board.

43749292.jpg
1cb8d941.jpg


Thanks a lot
 

AnAppleSnail

Flashlight Enthusiast
Joined
Aug 21, 2009
Messages
4,200
Location
South Hill, VA
XM-L on an XR-E MCPCB? (Identifying by eye)

It will be tough. The easiest way is to make a custom MCPCB to bridge, but then you'd have a custom MCPCB and may as well roll your own full-size one.

Puzzling this in my head it'll involve soldering directly from the MCPCB contacts to the LED contacts. You could:


Reflow a copper square onto the MCPCB with high-melt solder
Solder wires to the XM-L with high-melt solder
Reflow the XM-L to the copper with low-melt solder.

GtLiB.png

XR-E top, XM-L bottom. Probably not to scale.
 

wquiles

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Jan 10, 2005
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Texas, USA, Earth
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