Electronics Forum | Wed Apr 29 04:57:08 EDT 2009 | davepick
It depends on the application what will be considered the biggest issue to avoid (production or longterm reliability). Tin Whiskers are bit of an unknown quantity - but a more realistic problem could be dendritic growth / electromigration forming sho
Industry News | 2010-10-07 13:23:20.0
Industry-leading associations IPC and SMTA jointly announce the agenda for Session 3 of the High Performance Cleaning and Coating Conference, scheduled to take place November 16-18, 2010 at the Renaissance Hotel & Convention Center in Schaumburg, Illinois.
Industry News | 2012-11-02 09:04:14.0
IPC and SMTA jointly announce the agenda for Session 5 of the High-Reliability Cleaning and Coating Conference, scheduled to take place November 13-15, 2012 at the Crowne Plaza Hotel – O’Hare in Chicago, IL.
Technical Library | 2017-12-11 22:31:06.0
Typical printed circuit board assemblies (PCBAs) processed by reflow, wave, or selective wave soldering were analysed for typical levels of process related residues, resulting from a specific or combination of soldering process. Typical solder flux residue distribution pattern, composition, and concentration are profiled and reported. Presence of localized flux residues were visualized using a commercial Residue RAT gel test and chemical structure was identified by FT-IR, while the concentration was measured using ion chromatography, and the electrical properties of the extracts were determined by measuring the leak current using a twin platinum electrode setup. Localized extraction of residue was carried out using a commercial C3 extraction system. Results clearly show that the amount and distribution of flux residues are a function of the soldering process, and the level can be reduced by an appropriate cleaning. Selective soldering process generates significantly higher levels of residues compared to the wave and reflow process. For conformal coated PCBAs, the contamination levels generated from the tested wave and selective soldering process are found to be enough to generate blisters under exposure to high humidity levels.
SMTnet Express, October 7, 2021, Subscribers: 26,641, Companies: 11,452, Users: 26,882 Cleaning Before Conformal Coating Cleaning PCBs before conformal coating removes potentially harmful and unknown contaminants from the board
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/products/industrial-coating-systems-products/nozzels-for-liquid-and-can-coating
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GPD Global | https://www.gpd-global.com/pdf/dispense/Dispensing-Systems-and-Pumps-Overview.pdf
) less than the control air pressure n/a Operating temperature - max. 80° C (176° F) Voltage 24 VDC n/a request@gpd-global.com www.gpd-global.com Precision Dispensing Systems SimpleCoat and SimpleCoat TR are ideal for selective conformal coating and dispensing applications requiring a high level of accuracy and repeatability
