Assemblies Improving protective coatings

Improving the Quality of Protective Coatings

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[Dr. Helmut Schweigart; Stefan Strixner]

This Whitepaper explores how production parameters affect conformal coatings in electronics during thermal shock tests, revealing that production residues contribute to failures. Cleaning procedures positively influence performance, with the paper offering a ranking of factors influencing thermal shock resistance.

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Article number: EN-2311-07

Protective Coating

Improving the Quality of Protective Coatings

Protective coatings are widely used in applications that require high reliability of electronics. Thermal shock tests are used to verify the reliability of these coated electronics in the field. During this work, the effects of certain production parameters on the formation of faults in conforming coatings during thermal shock tests are investigated. The results particularly highlight that production residues contribute to failures during thermal shock tests and using cleaning procedures has a positive effect on performing well in these tests. This paper also provides a ranking of the relevant contributions to good thermal shock performance.

Surface cleanliness Zestron Schweigart | © @The Sour Cherry Fotografie - Michaela Curtis

Dr. Helmut Schweigart

Head of Reliability & Surfaces, ZESTRON Europe

Dr. Helmut Schweigart obtained his doctorate for research into the reliability of electronic sub-assemblies, and he has been employed at ZESTRON Europe since the early days of the company. He is now Head of Reliability & Surfaces Team. He is also a member of the Board of Management at GfKORR (Gesellschaft für Korrosionsschutz - a company specialising in corrosion inhibitors) as well as an active member of GUS (Gesellschaft für Umweltsimulation - an environmental simulation company) and of the IPC. He has already published numerous technical articles.

Surface cleanliness Zestron Strixner | © @The Sour Cherry Fotografie - Michaela Curtis

Stefan Strixner

Technology Analyst, ZESTRON Europe

Stefan Strixner studied Technical Chemistry at the Technical University Georg Simon Ohm in Nuremberg. Since 1992 he has been working at ZESTRON Europe, with varying emphases. As Principal Engineer, he is responsible for setting up the technical and analytical centres worldwide.

He is also an expert in the field of failure causes, reliability and technical cleanliness of electronic assemblies. As part of his work in the ZESTRON Reliability & Surfaces Team, he organises and conducts Technology Coaching sessions on these topics.

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