Electronics Forum | Fri Apr 05 16:31:55 EDT 2019 | slthomas
Never heard of such a thing. Are you sure the coating isn't just making the solder balls more prominent? Where are the "new" solder balls appearing after coating?
Electronics Forum | Wed Apr 17 11:45:47 EDT 2019 | slthomas
There may or may not be someone here with direct experience in this matter, but while you're waiting, do you have RoHS Certificates of Conformance from your material suppliers? I would think that's the place to start.
Electronics Forum | Fri Apr 19 00:25:15 EDT 2019 | mahammansoor
Yes, Steve, we have got the copies of conformance certificates from our material suppliers, however now we want to target the production line. Can you guide me where I can find anyone relevant?
Electronics Forum | Thu May 09 14:05:43 EDT 2019 | SMTA-Joe
Thanks for the option. Might be a good resource if we cannot achieve what we're looking for.
Electronics Forum | Mon Jun 24 22:39:25 EDT 2019 | sssamw
yes, the void should not expose the conductor or bridge the conductor, the coating there should be thick as IPC required but you need minimize the voids and bubbles. ALso for those small chips, a void or bubble on it means possible ECM, normlly shou
Electronics Forum | Thu Aug 01 11:18:06 EDT 2019 | bulur
Is TS-2414 insulating varnish material suitable for conformal coating of PCBAs? How can its performance be tested? What properties should be looked for on its data specs to conduct initial assessment if it is a suitable coating material?
Electronics Forum | Tue Oct 01 08:35:03 EDT 2019 | robl
For brush and dip coating we are using professional fume cabinets - https://monmouthscientific.co.uk/products/fume-cupboards/ 1.8m sized.
Electronics Forum | Fri Dec 06 15:38:07 EST 2019 | davef
Not going be accused of rushing into things, eh? Tons of stuff on the web. For instance: https://www.pca.state.mn.us/sites/default/files/dfe-leadfreesolder.pdf To me, the BIGGEST issue is process and material qualification that conforms to ISO9000,
Electronics Forum | Fri Dec 06 17:16:59 EST 2019 | kylehunter
To me, the BIGGEST issue is > process and material qualification that conforms > to ISO9000, especially those dreaded > "Special Processes." Can you please expand on this? I'm quite curious as well
Electronics Forum | Fri Aug 07 16:45:35 EDT 2020 | duso02
All URs require a long time to fully cure. And actually, most users do not reach full-cure before using the board. Even Humiseal 1A33 will be dry enough to handle after a very short time.
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