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Erschienen in:
01.08.2014 | Technical Paper
Analysis of the correlation between acoustic noise and vibration generated by a multi-layer ceramic capacitor
Erschienen in: Microsystem Technologies | Ausgabe 8-9/2014
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Abstract
Acoustic noise generated by a multi-layer ceramic capacitor (MLCC) makes users uncomfortable, so the problem must be analyzed to reduce the noise. There is a correlation between the acoustic noise and the vibration of MLCCs and the circuit board. Therefore, the acoustic noise problem must be investigated from a vibration perspective. In this study, the acoustic noise-generating mechanism was investigated, and the relationship between the characteristics of the noise and the dynamic characteristics of the circuit board with MLCC was analyzed. And a correlation criterion was proposed to predict the acoustic noise using the vibration response of the circuit board.