Electronics Forum | Tue Jul 06 09:58:27 EDT 1999 | dangy
who can tell me how viscosity measurements are really effective in smt process control? what can I monitor? Is it depending from fine pitch size? Thanks a lot. g. d'andrea
Electronics Forum | Wed Jul 07 13:33:45 EDT 1999 | Dave F
| who can tell me how viscosity measurements are really effective in smt process control? what can I monitor? Is it depending from fine pitch size? | Thanks a lot. | g. d'andrea | People write books on SMT process control. What's your problem? I
Electronics Forum | Sat Jul 10 00:57:17 EDT 1999 | Scott
| who can tell me how viscosity measurements are really effective in smt process control? what can I monitor? Is it depending from fine pitch size? | Thanks a lot. | g. d'andrea | The last place I worked used a viscosity meter, funny how little was
Electronics Forum | Fri Feb 14 09:30:00 EST 2003 | blnorman
We currently use Epibond 7275 with MPM printers. Unfortunately we've had problems with Vantico (formerly Ciba) providing a consistent product. Last summer we had extreme difficulty printing due to excessively high adhesive viscosity (20% higher tha
Electronics Forum | Fri Jul 20 08:26:52 EDT 2007 | cyber_wolf
SMT adhesive is hydroscopic. Some types absorb moisture faster than others. Moisture+SMT adhesive= pourous adhesive after cure. Excessive cure ramp rates can also contribute to porosity.
Electronics Forum | Wed Jul 18 09:25:58 EDT 2007 | ed_faranda
They still make SMT adhesive?!?!?! Holy SMOKES BATMAN. I haven't used SMT adhesive in, oh 9 years. But, back in "The Day", I found loctite to be best. Call your local rep in, show them your process and make them earn their money.
Electronics Forum | Thu Jul 19 11:57:35 EDT 2007 | bk
Loctite 3609 is a pretty good smt adhesive. I'd actually recommend the Loctite 3621 instead though. It's a better adhesive on some of those pain parts plus it's actually less expensive than the 3609
Electronics Forum | Wed Dec 15 09:00:07 EST 2004 | russ
All of the SMT adhesives that I have used are non-conductive by themselves. I assume that the solder joints are formed by wave soldering?
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