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Jan 6, 2021
Dross Contamination After Selective Soldering
The other dimension to consider is the amount of non-volitile resin/rosin in the flux. This has a major effect on the measured amount of flux residue. The balance is the amount of rosin/resin in the ...
Mitch Holtzer, Alpha Assembly Solutions

Dec 30, 2020
Seeking Alternatives to Solvent Cleaning
Although I'm no expert I've got lots of "hands-on" at levels from specifying and buying solders and solvents to soldering and cleaning, to testing, troubleshooting, and repair to out in the field or handling factory ...
Allan Knox, Knox Associates Design

Dec 30, 2020
Seeking Alternatives to Solvent Cleaning
The Assembly Brothers might not take umbrage with what you said, Mike, but I do. First of all, Jim’s statement about the number of users of aqueous or no-clean, while maybe not “everyone” is a ...
G. Dill, Flex

Dec 21, 2020
Issues With BGA Rework Residue
This is very good advice from Jim & Phil. Proper identification of the original solder paste chemistry is the way to go with defining a proper removal system for any residues. Likes clean likes, as ...
Russell Claybrook, MicroCare, LLC

Dec 18, 2020
How To Rework Warped PCBAs?
I read your web site religiously every time I see it in my Email account. The issue on warped PCBs was especially interesting to me. You can not unwarp/straighten a PCB after the soldering operation.Thin ...
Otto Steiner, Compufab Inc

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