Electronics Forum | Tue Sep 14 13:40:50 EDT 2010 | rayguide
SERA testing is the solution. Try it. http://www.suite101.com/content/circuit-board-design-diagram-and-assembly-a249751
Electronics Forum | Tue Sep 07 12:57:00 EDT 2010 | jrr3434
Thanks for the info mike. How well do these batch cleaners work with densely populated through hole boards that were solder with no clean flux? Is there a problem with water getting trapped under large capacitors? I'm using kester 959t for flux on b
Electronics Forum | Wed Sep 01 05:43:08 EDT 2010 | ranco13
Hi, does anyone has any experience waht so ever with waterman wave soldering with 7 lines of holes? We are now planning to take our assembly line to waterman 7 lines, instead of 5.
Electronics Forum | Tue Sep 14 02:12:22 EDT 2010 | genesan
Hi Sir, Thanks for reply and base on our system the same part are using for 2 model only and the problem occur on both assembly.By the way as feedback it happen on random pin of this BGA only.
Electronics Forum | Fri Oct 01 09:47:36 EDT 2010 | noid
Yes, they should be baked prior. We pre-bake all polyimide fabs, flex or not. They are prone to delam.
Electronics Forum | Fri Oct 01 10:07:14 EDT 2010 | mazjal7
Thank you Noid, Is the baking process product specific are they any guidelines/standard procedures? Any recommendations are appreciated. Thanks, David
Electronics Forum | Fri Oct 01 13:09:18 EDT 2010 | clampron
Good Afternoon, How is the stiffener adheared? If it is laminated to the flex, it may help you with the surface planarity through reflow. If it put on with PSA, it may cause more problems then it would solve. PSA gets soft through the reflow. It may
Electronics Forum | Thu Sep 30 16:16:14 EDT 2010 | vetteboy86
Were doing double sided, and I'm told our PCB finish is tin silver. From a quick search I'm finding that for double sided assemblies we would be better off using ENIG.
Electronics Forum | Wed Oct 06 15:11:11 EDT 2010 | davef
We aren't able to quote you chapter and verse, but J-001 says that you have to verify the solderability of parts prior to assembly.
Electronics Forum | Tue Nov 02 03:24:33 EDT 2010 | Jacki
Yes, we use solder paste,solder bar and solder wire from different manufactureres for 1PCB assembly. And, what JAX said, we never mixed solder paste from different manufactures and used.
