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Can You Paint a Circuit Board?

Discussion in 'General Electronics Discussion' started by New2Electronics, Mar 14, 2016.

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  1. New2Electronics

    New2Electronics

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    Mar 13, 2016
    I want to paint my circuit boards (after they have been built) and add liquid tape to the bottom of the board where the parts are solder together. Is there a downside to this, possibly with heat or some other issues?
     
  2. Minder

    Minder

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    Apr 24, 2015
    This is typically done with Conformal Coating, or Glyptal aerosol, although they can be had in a small can also.
    M.
     
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  3. davenn

    davenn Moderator

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    shouldn't be a problem ... use lead free enamel paint
    many commercial PCB's are dipped in varnish type material so at least the components are still visible
     
    Last edited: Mar 14, 2016
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  4. New2Electronics

    New2Electronics

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    Mar 13, 2016
    Thanks guys!!
     
  5. davenn

    davenn Moderator

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    forgot to answer that part....
    yes of course additional heat is the down side. Any coating will insulate the board and components and cause it to warm up more


    Dave
     
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  6. Gryd3

    Gryd3

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    Jun 25, 2014
    Depending on the components, some coating compounds should be avoided!
    Mainly anything that changes sizes as it cures or hardens... it can dislodge components and wreak havoc on the board...
     
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  7. Arouse1973

    Arouse1973 Adam

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    Dec 18, 2013
    It's also advisable to bake the PCBs in the oven to remove any moisture before coating. Not sure on the temp needed so you may want to have a quick look.
    Adam
     
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  8. New2Electronics

    New2Electronics

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    Mar 13, 2016
    I'm assuming you mean before you assemble them!?
     
  9. Gryd3

    Gryd3

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    Keep the heat low and you can do this after.
    Just remember that polystyrene has an incredibly low melting point... (Learned the hard-way trying to speed dry a keyboard...)
     
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  10. Arouse1973

    Arouse1973 Adam

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    Dec 18, 2013
    No after reflow / bath. It's low temperature so it won't melt any solder.
     
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  11. New2Electronics

    New2Electronics

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    Mar 13, 2016
    Thank you guys!!
     
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