Electronics Forum | Wed Sep 21 10:30:28 EDT 2005 | James
It could be outgassing, are there any electrolitic caps or anything else nearby that may contain air or moisture? You could try baking the parts before use.
Electronics Forum | Tue Nov 14 19:13:21 EST 2006 | russ
You have incomplete plating in the through holes would be my bet, baking will not solve, nothing will, at least that is what I have found except a lot of hand work and frustration, have your PCB house perform cross section at affected area in your
Electronics Forum | Mon Jan 15 18:24:40 EST 2007 | greg york
probably volatiles in the joint outgassing as it comes over the wave, is the joint a yellowy colour as well, or any pictures we can view cheers greg
Electronics Forum | Wed Jan 17 05:05:30 EST 2007 | Phil J
The most likely cause is moisture vapor outgassing violently from the Tant package. They are known to be moisture sensitive. Try baking some at 120C overnight and reflowing those.
Electronics Forum | Fri Mar 16 10:43:31 EDT 2007 | kennyg
A quick experiment idea: Try reflowing a bare board prior to assembly. Perhaps your boards have moisture and outgassing issues.
Electronics Forum | Wed Jan 27 20:11:36 EST 2010 | plerma
What material is used to cap a via? Is it the > standard LPI Process/Material? we tent vias all the time, mostly to assist with assembly and the majority of the time outgassing is not a problem. What is the purpose in your case?
Electronics Forum | Mon Jan 18 15:07:12 EST 2010 | mikesewell
Usually the print specifies the material since the design is qualified with it in place. I've used several from Scotchweld 2216, Scotchweld DP190, Hysol E-20HP, to NASA outgassing qualified Masterbond 10HT.
Electronics Forum | Thu Apr 29 15:34:40 EDT 2010 | bradlanger
Does anybody know where you can get Canada Bolson Oil or Suitable alternative that is optically clear to test the plating in a PTH for outgassing?
Electronics Forum | Tue Apr 03 13:28:11 EDT 2012 | davef
Is this related to this specific machine or this product? * Is this machine having a tough time regulating pot temperature? * Is this product dragging-out solder from the pot when it is being run so quickly? * Is this board out-gassing to create thes
Electronics Forum | Thu Nov 22 12:56:12 EST 2001 | tony_sauve
Thanks for the comments & suggestions. Here's some info garnered from a telecon w/the PCB Fab house: -the blind via's extend from layer 2-17...this was a revelation. The info from our customer was that the via's only extended down 2 layers. Did I men
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