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Thread: Rebel LEDs/practical matters

  1. #1

    Default Rebel LEDs/practical matters

    Hello Everyone,

    I bought some of the new Rebel LEDs for testing, and these things are really small and don't look user-friendly. I am wondering what kind of heat-sink is needed for reasonable operation, and how the LED should be attached to it. I know these types of LED have reduced heat-sinking requirements, because the junction temperature is 150C. My first thought was to use a piece of metal with a fairly good thermal mass, and glue the thermal pad on the back of the LED to it, using thermally-conductive epoxy.

    The data sheet is extensive, yet they give no practical advice on heat-sinking, so I don't have a clue. I am also wondering about soldering or attaching leads to those extremely tiny cathode and anode pads on the bottom. I had a lot of trouble soldering to similar pads on a Luxeon K2, they kept popping off. Any help would be appreciated. Thanks in advance, Joe

  2. #2

    Default

    I found the application brief:

    http://www.lumileds.com/pdfs/AB32.pdf

    I'll be going over this for a while, I can see the Rebels won't be especially easy to use.

  3. #3
    Join Date
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    Default

    If you have any detailed questions, let me know through PM, my father was the director of the rebel project when it was started about 3 years ago.
    CLICKY!!!

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