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Why do some LED's produce more light than others at the same voltage/current?

Discussion in 'Electronic Basics' started by SA Development, Mar 21, 2005.

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  1. Interesting question. Since they are both GaN types, I would tend to
    guess that it is more about the phosphors used and the resulting
    distribution of the energy working with the human eye's sensitivities
    that lead to the bulk of the differences. Or else about the viewing
    angles (which you snipped in the bud.) Finally, it might be due to a
    backside reflector of some kind in the brighter one.

    It would be hard to believe that a factor of 6 in efficiency would
    occur on GaN processing alone.

    Looks like those two data sheets were dead copies of each other except
    for the difference in mcd and part number. Perhaps Don K. will teach
    us about what is going on here...

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