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Journal of Mechanical Science and Technology

, Volume 33, Issue 4, pp 1595–1601 | Cite as

Dynamic analysis of multilayer ceramic capacitor for vibration reduction of printed circuit board

  • Dongjoon Kim
  • Wheejae Kim
  • Wan-Chin KimEmail author
Article
  • 6 Downloads

Abstract

Owing to their high permittivity and volumetric efficiency, the demand for multilayer ceramic capacitors (MLCCs) has increased rapidly in recent times. Because of the electromechanical characteristics of BaTiO3, MLCC vibrates, resulting in printed circuit boards (PCBs) generating acoustic noise. To construct an accurate finite element model of an MLCC, piezoelectric and electrostrictive coefficients were extracted and verified through experiments. The top cover layer thickness and bandwidth were chosen as design parameters to reduce the vibration of PCB. The simulation results indicate that the bandwidth and top cover layer thickness are highly related to the vibration in the top direction and the rotational moment generated from the head surface, respectively. Based on the analysis results, a novel MLCC was suggested and it exhibited reduced vibrational characteristics of PCB about 75 % compared with that of commercial MLCCs.

Keywords

Printed circuit board vibration Acoustic noise Dynamic analysis Multilayer ceramic capacitor (MLCC) Parametric study 

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Copyright information

© KSME & Springer 2019

Authors and Affiliations

  1. 1.School of Mechanical EngineeringYonsei UniversitySeoulKorea
  2. 2.Department of Smart Manufacturing Applied EngineeringHanbat National UniversityDaejeonKorea

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