Analysis of the correlation between acoustic noise and vibration generated by a multi-layer ceramic capacitor

作者：Ko Byung Han; Jeong Sang Geuk; Ahn Young Ghyu; Park Kyoung Su; Park No Cheol^*; Park Young Pil

来源：Microsystem Technologies, 2014, 20(8-9): 1671-1677.

DOI：10.1007/s00542-014-2209-5

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.

• 出版日期2014-8