Hi all,

I was wondering if I could get some feedback regarding washing of misprinted
PCBs.  What do you prefer, spray in air, ultrasonic immersion, other
methods?  I am thinking of moving to an ultrasonic immersion process but am
concerned about damaging components already populated on one side, due to
the ultrasonic frequency.  Is this a real concern if the frequency is 40kHz
and a power density of 7.6 watts/liter?

 

Also, what are the alternate methods used for cleaning a misprinted PCB, one
side populated post-reflow, with components that are not sealed for wash?

 

Thanks,

Rob Strecker



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