Electronics Forum | Fri Apr 26 10:42:28 EDT 2002 | Jim M.
I worked for a telecom company that had sites in the deserts, jungles, mountains and regular built up area's. All boards were built using Aim 291/293 No clean solder paste. (all boards built to Bellcore standard) The boards were coated with Dymax ur
Electronics Forum | Thu Sep 11 15:23:31 EDT 2003 | Peter L.
I have come across a rash of failed assemblies that have 0805 capacitors and resistors, bottom side glued, wave soldered and washed. Trouble shooter reported touching up the solder joints on a few areas and the boards would pass test. I had a look a
Electronics Forum | Thu Oct 15 16:41:28 EDT 1998 | Dave F
| | All Y'll | | | | How do you clean components that must be added to an assembled board after water wash? | | | | BACKGROUND | | | | Our basic process goes like this: | | | | 1 Print paste with OA flux, place, reflow, wash | | 2 Repeat 1 | |
Electronics Forum | Sat Oct 17 10:50:11 EDT 1998 | mike
| | | All Y'll | | | | | | How do you clean components that must be added to an assembled board after water wash? | | | | | | BACKGROUND | | | | | | Our basic process goes like this: | | | | | | 1 Print paste with OA flux, place, reflow, wash |
Electronics Forum | Wed Aug 17 13:57:27 EDT 2005 | ppwlee
We have encountered what appears to be mask discoloration after wave soldering. The areas of concern coincide with the areas that were exposed selectively by fixtures during wave soldering, dominated by one date code of PCB with a slightly different
Electronics Forum | Thu Jul 20 12:49:05 EDT 2000 | Bob Willis
So far on all my trials on PIHR I have only used standard products as the paste is defined by the printing requirements for fine pitch etc. As most people will have seen you just get a heap more residues with this process and even more with lead free
Electronics Forum | Wed Mar 24 12:34:33 EST 1999 | Scott McKee
| Hi, | I have a customer who's electronic assemblies produce RF. He is insisting upon aqueuos cleaning. We switched to a no clean solder years ago and no longer have an aqueous system. | Is aqueous cleaning necessary to eliminate 'cross talk' of
Electronics Forum | Thu Oct 21 09:56:11 EDT 1999 | Brian
Rich An excellent question and one which is often totally ignored. If you wish a "no-clean" flux to be as safe as it possibly can be, the PCB and the components must all be contamination free (ionic and non-ionic). Only then can you be sure that the
Electronics Forum | Wed Feb 14 16:58:12 EST 2018 | cbart
you would be best to get this from your paste/solder manufacture. but here are some rules of thumb: -Solder paste out of fridge before use - get out the night before needed.. don't let your op's warm on the oven!! you will regret that! if not over ni
Electronics Forum | Tue Aug 10 07:28:49 EDT 1999 | Brian
| | | I am having cleaning problems when processing PCB's which have | | | TAIYO solder mask on them. After processing, hand soldering and | | | cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide marks etc. Other
.jpg)