Influence of the cavities on the PCB mechanical properties
Abstract
Purpose
The main aim of this paper is to investigate the influence of the cavity coverage on the printed circuit boards (PCB) to the resonant frequency, acceleration and displacement.
Design/methodology/approach
Tests were realized on four PCBs with different cavity areas. Frequency range of tests was between 10 and 2,000 Hz with 0.3 g acceleration amplitude. In addition, more simulations were performed to check different setups of the boards.
Findings
From the calculated and measured data, it is clear that with the larger cavity area the resonance frequency drops. In case a greater number of components placed in cavities are needed on board, it is appropriate to use multiple smaller cavities than the bigger ones.
Originality/value
Results in this paper could be very useful for PCB manufacturers and designers during designing of the new PCBs with cavities for dipped components.
Keywords
Acknowledgements
Funding for this research work was supported through the grant project of the Czech Ministry of Education for Brno University of Technology FEKT-S-14-2168 “Research of modern and innovative technologies for packaging and interconnection in microelectronics” and from Eureka Euripides project EUR 10-101, LF 13,007 “Board on Board”.
Citation
Psota, B., Otáhal, A. and Szendiuch, I. (2015), "Influence of the cavities on the PCB mechanical properties", Circuit World, Vol. 41 No. 2, pp. 76-79. https://doi.org/10.1108/CW-10-2014-0048
Publisher
:Emerald Group Publishing Limited
Copyright © 2015, Emerald Group Publishing Limited