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SMTnet Express, June 1, 2017, Subscribers: 30,507, Companies: 10,601, Users: 23,315

Technical Library

Evaluating the Effects of Plasma Treatment prior to Conformal Coating on Eectronic Assemblies to Enhance Conformity of Coverage

John D. Vanderford, Ann E. Paxton - Desich SMART Center, Dave Selestak - Nordson MARCH

The corrosion of Nickel-Palladium-Gold (Ni-Pd-Au) finish terminals in humid environments is known to be reduced with the application of a conformal coating such as acrylic. Corrosion has a higher rate of occurrence around the terminal 'knee' of a surface mount component, which may be reduced with the application of conformal coatings. Although radio frequency (RF) plasma processing is generally known to enhance conformity of conformal coating to surfaces through ionic bombardment, the effect on the functionality of assembled printed circuit boards (PCB) is not as well known.

Forum search results for related keywords: conformal coating, plasma, conformity.


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IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

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