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

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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.

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References

  • John DP (2006) Piezoelectric effects of ceramic chip capacitors (singing capacitors). 2006–08 Arrow Asian Times Article

  • Mark L, Roy G, Bill S, John P, Xilin X, Pascal P, Abhijit G, Michael R, Philip L, Aziz T (2007) Capacitors for reduced micro-phonics and sound emission. CARTS 2007 Conf 27:207–216

  • Nicolas G (2012) Reducing MLCCs’ piezoelectric effects and audible noise. EE times Europe http://www.analog-eetimes.com/en/reducing-mlccs-piezoelectric-effects-and-audible-noise.html

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Acknowledgments

This study was supported by the Samsung Electro-Mechanics Co., Ltd. (No. 2012-8-1793).

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Authors and Affiliations

  1. Department of Mechanical Engineering, Yonsei University, Seoul, Korea

    Byung-Han Ko, Sang-Geuk Jeong, No-Cheol Park & Young-Pil Park

  2. LCR Division, Samsung Electro-Mechanics Co., Ltd, Suwon, Korea

    Young-Ghyu Ahn

  3. Department of Mechanical Engineering, Gachon University, Songnam, Gyeonggi-do, Korea

    Kyoung-Su Park

Authors
  1. Byung-Han Ko
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  2. Sang-Geuk Jeong
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  3. Young-Ghyu Ahn
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  4. Kyoung-Su Park
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  5. No-Cheol Park
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  6. Young-Pil Park
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Corresponding author

Correspondence to No-Cheol Park.

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Ko, BH., Jeong, SG., Ahn, YG. et al. Analysis of the correlation between acoustic noise and vibration generated by a multi-layer ceramic capacitor. Microsyst Technol 20, 1671–1677 (2014). https://doi.org/10.1007/s00542-014-2209-5

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  • DOI: https://doi.org/10.1007/s00542-014-2209-5

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