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Very large heatsink.

Wanted: Discussion in 'For Sale / Wanted' started by sureshot, Mar 5, 2016.

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  1. sureshot


    Jul 7, 2012
    Wanted very large heatsink capable of accommodating 6 x TO3 transistor packages. Drilled or undrilled is fine.
  2. Herschel Peeler

    Herschel Peeler

    Feb 21, 2016
    The best classic heat sink I have seen is a popular author using a motorcycle motor aluminum head as a heat sink. Is this for the personal work bench or for sale?
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    Look for something with fins that can be made into a "tunnel" with three transistors on each side. This will allow you to mount a fan on one end, increasing the efficiency and reducing the size heatsink you require.

    Something like this.

    Have you determined the required thermal characteristics of the heatsink?
    Last edited: Mar 7, 2016
  4. sureshot


    Jul 7, 2012
    I really like both ideas, thank you very much ! No Steve not yet, it will be overkill anyway, as i'm only going to be drawing 15 Amps continuous and 20 Amps absolute maximum.
    As a biker many years ago the aluminium head heatsink idea sounds really good, i have a local machine engineering work shop that might be able to quote some fin removal. Just enough for each package. Thanks again really cool ideas. I'm a thinker often looking for solutions, and you' ve both given me food for thought there !
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