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Clean bga with ultrasonic

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    Clean bga with ultrasonic

    Hi all, I read that in some cases to clear bga with a non ultra expensive (permit to change the frequency ) ultrasonic wash can damage the chip.
    Some experience....
    thanks

    #2
    Re: Clean bga with ultrasonic

    i clean hundreds mobile phone boards with ultrasonic bath with no damage.
    every good technician doing this after liquid damage.

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      #3
      Re: Clean bga with ultrasonic

      I use the same method with no problem, but I assume that the article I read, referred about an issue of separation between the die and the golden thread. It's possible?
      How liquid you use ? I try some liquid and various temperature but I have the best result , especially to remove the flux after a reballing, with a isopropil alcool at 60-70 C° or for particular cases an ersa solvent. with distilled water, the results are poor as well as with specific liquids, probably for the frequency, my bath operates at 44 Khz but I read of devices operating at much higher frequencies.

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        #4
        Re: Clean bga with ultrasonic

        i dont using utrasonic bath after reball. only for removing oxidation after liquid damage under the bga.

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          #5
          Re: Clean bga with ultrasonic

          The only damage i have read about is if the chip touches the inside of the bath, which can cause physical damage to the chip and also the bath. The chip/item should be in a try or suspended.
          I use IPA in my bath but i don't clean BGA chips in mine.

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            #6
            Re: Clean bga with ultrasonic

            Agreed to diif. They are not ESD safe.

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              #7
              Re: Clean bga with ultrasonic

              Originally posted by Ramee View Post
              Agreed to diif. They are not ESD safe.
              ofcourse thats why all using some kind of nonmetal "carpet" on bottom of ultrasonicbath

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                #8
                Re: Clean bga with ultrasonic

                I find the article, can I post the full link ?
                http://www.xxxxxxx.org/mart/50226F.shtml

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                  #9
                  Re: Clean bga with ultrasonic

                  all I get is this,
                  (Controller file /home/orgclini/public_html/xxxxxxx.org/libs/controller/mart.php not found.)
                  Is it just me again

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                    #10
                    Re: Clean bga with ultrasonic

                    maybe he meant this link
                    http://www.ipcoutlook.org/mart/50226F.shtml

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                      #11
                      Re: Clean bga with ultrasonic

                      I am a newbie to this forum and not know the policy to post a link.
                      the right link is http://www.ipcoutlook.org/mart/50226F.shtml

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                        #12
                        Re: Clean bga with ultrasonic

                        thanks
                        Cheers jasko
                        Last edited by Bobdee; 12-09-2014, 04:23 PM.

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                          #13
                          Re: Clean bga with ultrasonic

                          An ulrasonic bath shouldn't damage the bga. I've done not only phones, but also CPUs, tablets, laptop motherboards and other PCBs. The weirdest thing that I have fixed with an ultrasonic bath was an iPad camera. Isopropyl alcohol didn't work, but after the bath it worked like new.
                          Keyboard not detected, press F1 to continue...

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                            #14
                            Re: Clean bga with ultrasonic

                            Can somebodt tell me what liquid mix to use in ultrasonic for mobile and BGA

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                              #15
                              Re: Clean bga with ultrasonic

                              I did not know an ultrasonic cleaner is not ESD safe - i removed the plastic tray from mine when i got it, and forgot where i've put it. I've cleaned lots of BGAs in it and it didn't damage any of them. But i always put the BGAs in with the pads facing up.
                              Originally posted by PeteS in CA
                              Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
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