OK to use thermal glue on TO-92 heat sink?

Discussion in 'The Projects Forum' started by jellytot, Jun 2, 2015.

  1. jellytot

    Thread Starter Member

    May 20, 2014
    72
    0
    My TO-92 voltage regulator was getting a little hot, so I bought a heat sink for it (I was a little surprised they actually make them for TO-92 cases). It's a press-on heat sink, and it's pretty snug when I press it on. Normally I use thermal glue on my TO-220 heat sinks, but should I use glue on this one? Would it be a bad idea for some reason, since the TO-92 voltage regulator is a plastic case?
    Heat sink: Aavid Thermalloy 575200B00000G
    Datasheet: http://www.aavid.com/sites/default/files/literature/Aavid-Board-Level-Heatsinks-Catalog.pdf#page=68
    Thermal Glue: http://www.arctic.ac/worldwide_en/tg-003.html
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,515
    2,369
    I use thermal compound, it is non adhesive, Wakefield Engineering.
    Max.
     
  3. DickCappels

    Moderator

    Aug 21, 2008
    2,650
    632
    There seems little risk in trying it.

    Remember, it is ok for most transistors to run hot unless they are exposed so that it could be touched easily. It is often just fine for a transistor package without a heatsink to be at the temperature of boiling water.
     
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