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

Published:

June 1, 2017

Author:

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

Abstract:

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.

The purpose of this study is to assess whether RF plasma processing can enhance the adhesive and coverage qualities of an acrylic conformal coating on PCBs, specifically on Ni-Pd-Au terminals with a knee, and if plasma processing has an effect on the electrical functionality of components and fully assembled PCB....

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Company Information:

Nordson MARCH

Nordson MARCH is the global leader in plasma cleaning equipment and plasma applications technology. The company has designed and manufactured plasma equipment for more than 30 years.

Concord, California, USA

Cleaning, Component Preparation, Manufacturer of Assembly Equipment, OEM, Repair/Rework

  • Phone 925.827.1240
  • Fax 925.827.1189

Nordson MARCH website

Company Postings:

(8) products in the catalog

(2) technical library articles

(11) news releases

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