3 nuclean or water soluable conformal coating results

Electronics Forum: nuclean or water soluable conformal coating (Page 1 of 1)

BGA underfill necessary with conformal coat?

Electronics Forum | Wed Mar 27 18:23:01 EST 2002 | kmorris

Does anyone have experience doing conformal coating over Plastic BGA in High-Rel PCB assembly? Is underfill necessary to avoid problems with entrapped air, etc? Our application is a 17x17mm BGA, 256 I/O. We are assembling with a water soluable pas

Re: When using noclean flux or clean flux process?

Electronics Forum | Tue Sep 21 13:10:10 EDT 1999 | Dave F

| Dear All, | | In order to understand the soldering technologies in SMT, I'd like to understand why some cards are soldered and then cleaned, or only soldered whitout water cleaning nor "ultra sound" wavelength. | | I mean that I wonder why we use

Re: When using noclean flux or clean flux process?

Electronics Forum | Wed Sep 22 02:45:23 EDT 1999 | Brian

| | Dear All, | | | | In order to understand the soldering technologies in SMT, I'd like to understand why some cards are soldered and then cleaned, or only soldered whitout water cleaning nor "ultra sound" wavelength. | | | | I mean that I wonder

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