Electronics Forum | Mon Apr 29 09:54:46 EDT 2002 | davef
MadReindeer If this white residue is salt, * Why do you say is the presence of it 'not dangerous it only looking bad'? Don't salts sometimes go into solution with moisture on the board from humidity in the air and form cathodic plating shorts betw
Electronics Forum | Tue Sep 01 06:55:22 EDT 2009 | davef
Rocko: While you're rooting around with the cleaner to better understand the issues with your water supply, monitor the heaters of your cleaner. We've had instances were the heater control has created "white haze" problems. Are you sure the residue
Industry News | 2015-04-21 16:57:06.0
The Balver Zinn Group announces that they will be attending SMT/Hybrid/Packaging 2015 scheduled to take place May 5-7 in Nuremberg, Germany. They will highlight the company’s latest solder flux and paste technology in Booth #7-308.
Industry News | 2017-04-23 10:57:38.0
MicroCare Asia will use NEPCON Shanghai from 25-27 April as the platform in which to highlight three innovative new cleaning chemistries of the Tergo™ family: the Tergo™ Metal Cleaning Fluid, the Tergo™ Chlorine-Free Cleaning Fluid and the Tergo™ High-Performance Flux Remover.
Technical Library | 2020-03-09 10:50:17.0
A customer called the Helpline seeking advice for cleaning no-clean fluxes prior to applying a conformal coating. The customer's assemblies were manufactured with a no-clean rosin based solder paste (ROL0) and were cleaned with an isopropyl alcohol (IPA) wash. After cleaning, a white residue was sometimes found in areas with high paste concentrations and was interfering with the adhesion of the conformal coating (Figure 1). For conformal coatings to adhere properly, the printed circuit board (PCB) surface must be clean of fluxes and other residues. In addition, ionic contamination left by flux residues can lead to corrosion and dendrite growth, two common causes of electronic opens and shorts. Other residues can lead to unwanted impedance and physical interference with moving parts.
Technical Library | 1999-05-07 10:47:00.0
White residue remaining after cleaning circuit board assemblies can be caused by a variety of chemicals and reactions. Rosin and water-soluble fluxes, circuit board resins and epoxies, component materials and other contamination all contribute to this complex chemistry. This paper discusses many of the sources of the residues that seem to be an ever-increasing occurrence.
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-glossary-of-terms
. See Halides and Halogens white paper . Halide Free Solder flux containing less than 0.05% quantitative halide. Halogen Elements in the 17th column of the periodic table
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/last-will-of-bga-void.pdf
placed in the Electrovert Aquastorm 200 in-line cleaning system for removal of solder flux residues and other contaminants from the assembly. The in-line cleaner utilized 13.5% (by volume) Kyzen Aquanox 4625 saponifier in deionized water. The in-line
