Yes, a coating will wick up the leads and cause connectivity issues. Once it is cured/dried, that should not happen unless it is put back into a liquid state due to solvent contact or high-heat. Lloyd Duso Plant Manager Diamond-MT (814) 535-3505 www.Diamond-mt.com On Wed, Feb 7, 2018 at 5:17 PM, Jack Olson <[log in to unmask]> wrote: > sorry for the long delay (and thank you for the responses) > but as I was reviewing these posts I had another question: > > Have you ever heard of problems with conformal coating material wicking up > the connector leads and causing intermittent connections? > > thanks again, > Jack > > > On Wed, 6 Dec 2017 14:09:46 -0500, lduso - Diamond-MT.com < > [log in to unmask]> wrote: > > (..snip...) > >It's up to me to decide how close to J1 to get with the coating. I once > >coated the leads of all the fine-pitch connectors and the customer said > >that was too close. The next customer will reject the work if I don't coat > >the leads. > > >