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Heat Sink for "ATV" transistor case / package?

Discussion in 'Electronic Components' started by William Miller, Mar 22, 2008.

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  1. An ATV package diagram is at http://207.234.249.73/mwd/atv_package.gif

    Who makes a heat sink for the "ATV" transistor package or equivalent?

    Or is there another package / case style that's equivalent to the ATV?

    Thanks.

    William E. Miller, AS-EET
    † IN
     
  2. ..
    This is also close to an "FTR" case, if that helps.
     
  3. Ross Herbert

    Ross Herbert Guest

    :An ATV package diagram is at http://207.234.249.73/mwd/atv_package.gif
    :
    :Who makes a heat sink for the "ATV" transistor package or equivalent?
    :
    :Or is there another package / case style that's equivalent to the ATV?
    :
    :Thanks.
    :
    :William E. Miller, AS-EET
    :p † IN


    What makes you think there would be a heat sink designed for the ATV package? It
    is just a proprietary plastic transistor package devised by ROHM for higher
    power devices than would normally be housed in a typical TO92 or TO 226 package.

    http://www.rohm.com/products/databook/tr/pdf/transistorpkg_1.pdf

    Other manufacturers such as Zetex have proprietary outlines eg. E-line
    http://www.zetex.com/3.0/pack/E-Line.pdf

    It is difficult to imagine how they can get these devices to handle continuous
    currents of 5A or more in a plastic package smaller than a TO92 without a
    heatsink, but they do eg. http://www.zetex.com/3.0/pdf/ZTX851.pdf

    Since the ATV package doesn't have a mounting tab or hole you can bet your life
    there is no heatsink made for it. Consequently, you will have to fabricate some
    method of clamping it to a suitable heatsink if it is required to dissipate more
    heat than it is designed to do.
     
  4. Mook Johnson

    Mook Johnson Guest

  5. legg

    legg Guest

    A more apt question would be:

    Is there an electrical equivalent to pnxxxxx in a package with better
    thermal ratings or heat-sinking capability?

    What part number are you dealing with?

    RL
     
  6. Eeyore

    Eeyore Guest

    I would say there's unlikely to be a heatsink for a part like that. It
    would be better to use a more suitable rated part.

    Graham
     
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