Challenges in the Production of Power Modules – How a Cleaning Process Can Help to Increase the Yield
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[Christoph Karl; Katharina Wöhrl]
Impurities and unfavorable surface properties can negatively impact the yield and reliability of power modules. Specially adapted cleaning processes improve surface quality during production, enhance reliability, and help achieve consistently high yields.
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Article number: EN-2503-04
Various successive production steps are required to manufacture power modules. Various connection technologies are used, such as soldering or sintering, and the modules are encapsulated or moulded during the process. The quality and reliability of each individual process is relevant for a good yield. However, these can be affected by impurities on the surface or by negative surface properties, which can reduce the yield and, in the worst case, shorten the service life of the modules. Specially adapted cleaning processes can help to increase the quality of subsequent processes at various points in the production sequence, to enhance the reliability of the modules and to achieve a consistently high yield.
Christoph Karl
Project Engineer Applied Research, ZESTRON Europe
Christoph Karl studied Mechanical Engineering with a specialization in Materials Engineering, earning a Dipl.Ing. degree. He then worked at the University of Birmingham and in the automotive supply industry.
At Zestron, he is active in the Applied Research Group, where he oversees topics and research projects related to metrology, analytics, plant engineering, and Design of Experiment (DoE).
In the Applied Research Group, he collaborates with R&D and application technology to develop new methods for analyzing cleaning under components and presents results in a highly targeted manner.
Katharina Wöhrl
Product Management ZESTRON Europe, ZESTRON Europe
Katharina Wöhrl studied Electrical Engineering with a focus on Electromobility at the Technical University of Applied Sciences in Ingolstadt. She then continued her research on lithium-ion batteries at the university. At ZESTRON, she works in Product Management.
