Can someone solder this for me?

Discussion in 'The Projects Forum' started by Synaps3, Oct 17, 2015.

  1. Synaps3

    Thread Starter Member

    Jun 5, 2013
    67
    2
    I have a prototype project that I'm working on and it involves one QFN-24 (4x4mm) chip. I have never soldered a chip this small before and I have tried many different methods of soldering and I can't make all connections work. Right now I have 4 of these chips and PCBs (it's basically just a breakout board for the chips 11x11mm). I plan to receive 20 more later. Maybe as a favor or for a small cost, someone with more tools/experience could do this for me? I am located in the US and I'd prefer that you are too, so the shipping time is fast. Let me know if you can help! Thanks.
     
  2. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    So you want someone to do highly precise work for little cost and you want it fast? Good luck with your search.
     
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Send it my way.
     
  4. GS3

    Senior Member

    Sep 21, 2007
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    35
    Synaps3, I find your request perfectly reasonable as this is a place to ask for help from others.

    You can probably do it yourself if you use the right technique. Have a look at

    and
    and see if that helps.
     
  5. Synaps3

    Thread Starter Member

    Jun 5, 2013
    67
    2
    The soldering may not be as trivial as you think. They are the QFN type with the pads on the bottom.
     
  6. Synaps3

    Thread Starter Member

    Jun 5, 2013
    67
    2
    I'll send you a PM later. I have four of them and I really only need at least one to work so that I can test the prototype. If I need more I can have a company do it if necessary.
     
  7. KJ6EAD

    Senior Member

    Apr 30, 2011
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    R!f@@ is in the Maldive Islands so shipping could be slow or expensive and of course it's so close to sea level that the islands could be swamped by the wake of a passing Jet Ski at any time. ;)
     
  8. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Jet ski is fun .......KJ are u jealous ?:rolleyes:

    I believe OP did not know where I am at. Once he found out the shipping charges he will have second thoughts.
     
    Sinus23 and KJ6EAD like this.
  9. GS3

    Senior Member

    Sep 21, 2007
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    I realize that. I have never done this type of soldering so I am not your best guide. OTOH, I talk to a guy who repairs laptops and he tells me he replaces the video chips (hundreds of surface contacts) himself. He says he cleans everything well, applies soldering paste, places chip in place, applies pressure with some sort of holding vice to hold it securely in place and then applies heat. I guess the heat application part is where you have to be careful to apply enough but not too much.

    If you can get some cheap chips you can practice and see how it goes. It seems like a skill worth having.
     
  10. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    Solder paste will help.
     
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