Electronics Forum: solder mask bubbles in spacing (Page 1 of 1)

Re: Solder mask materials and equitements wanted

Electronics Forum | Sat Aug 29 08:43:35 EDT 1998 | Dave F

| Hi, Friends, | Could you please recommend me some solder mask materials and equitements for high quality solder mask? Details such as company name, phone numer et al are welcomed. Thanks! | Have a good day | Xingsheng Xingsheng: Consider the follo

Bubbles in conformal coat

Electronics Forum | Thu Aug 27 11:35:07 EDT 2009 | davef

There are many possibilities: * Conformal coat is incompatible with surface residue on the board * Conformal coat is incompatible with solder mask on the board * Moisture is out-gassing from the board * Conformal coat is too thick and does not allow

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Fri May 02 09:37:23 EDT 2003 | Jerry Magera

Via in pad is the most efficient use of space. Blind via seems to be blamed for this. Cross-sections (send me some) will probably show a void still existing in the via or spherical voids aligned near the component pad side. One can estimate the vo

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