With 140 participants, the ZVEI online conference on "Technical Cleanliness - Functional Safety in the Electrical Industry" on November 9, 2021 was very well attended. Under the conference leadership of Volker Burger, CEO of CleanControlling, top-class speakers and experts spoke on various sub-aspects and the particular challenges of technical cleanliness in the production of electrical and electronic components, as they are increasingly used in the field of e-mobility, driver assistance systems and autonomous driving in the automotive industry.
In order to meet the developments in this environment with targeted solutions for component cleanliness and thus for their functional safety, the ZVEI working group on component cleanliness is working intensively on the relevant topics. In this context, the results of two studies comparing various extraction methods for cleanliness testing and different component cleaning methods with regard to cleaning effectiveness were presented exclusively at the online congress.
Dr. Marc Nicolussi from Bosch made it very clear that a knowledge-based approach to risk management in technical cleanliness through product-specific risk assessment is increasingly necessary. This can only be achieved if the special risk factors, e.g. in high-voltage applications, are investigated in detail and particle threshold values are developed and agreed on an equal footing between customers and suppliers from an economic point of view. In this context, it also plays an essential role that for such components the classical extraction and cleaning methods with liquid media are mostly unsuitable and dry extraction or component cleaning is more appropriate. In particular, the study on the comparison of extraction methods has proven the suitability and comparability of dry suction extraction with approx. 250 cleanliness tests.
Another very important work result of the ZVEI working group is the ZVEI guideline "Technical Cleanliness in Electrical Engineering" in its 2nd version, which has been adapted to the latest developments and empirical values. Based on this version of the ZVEI guide, the topic of technical cleanliness of electronic components is now also dealt with and described internationally in the Technical Report IEC TR 61191-7:2020.
The sponsors comments on the conference "Technical Cleanliness 2021" (in German):
Dr. Helmut Schweigart, Head of Reliability & Surfaces at ZESTRON
