Influence of Solder Residues on the Protective Effect of Coatings Under Moisture and Voltages up to 500 V
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[Dr. Helmut Schweigart; Freddy Gilbert; Dr. Mirco Eckardt]
Brief Insight
Conformal coatings have long been used in low-voltage applications – but how do they perform in power electronics?
Our white paper shows how solder residues affect the protective effect and why the application process determines reliability.
Delivery form: PDF
Article number: EN-2508-08
White paper
Influence of Solder Residues on the Protective Effect of Coatings Under Moisture and Voltages up to 500 V
Abtract
Polymer-based Conformal Coatings have traditionally been applied to protect electronic assemblies in low-voltage applications. Recently, however, their use in power electronics has come into focus in order to achieve insulation coordination according to IEC 60664 or to reduce the distance between potentials. Investigations in the Coating Reliability Test (IEC PAS 61191-10) show that hygroscopic solder residues – in particular malate – strongly influence the protective effect. Although no clear material-dependent trend could be identified, the results indicate that coating systems can also be suitable for higher voltages. A decisive success factor remains the application process, as it plays a crucial role in determining the reliability of the coating.
To find out what role solder residues really play, request the white paper.
Key Topics
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Background to the study
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Comparison of residues from the soldering process
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Comparison of coating materials
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Influence of high voltage
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Discussion of the study results
Category: Protective Coating | Request: Bookmark this
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.
Freddy Gilbert
Technology Analyst, ZESTRON Europe
Freddy Gilbert studied material sciences at the Graduate School of engineering of the University of Montpellier and the Technical University of Berlin. In his position as Technology Analyst in the ZESTRON Reliability & Surfaces team, he organises and conducts Technology Coachings focused on failure analysis, surface analysis as well as risk assessment.
Dr. Mirco Eckardt
Technology Analyst, ZESTRON Europe
Dr. Mirco Eckardt did his thesis in chemistry and his master studies in chemistry at the university of Bayreuth. As part of our ZESTRON Reliability & Surfaces Team he is responsible for the examination of Technology Coachings within the fields risk assessment and failure analysis as well as for conducting research projects.
