Abstract
BaTiO3-MLCC has the characteristics of unstable output voltage under high impact, which may lead to signal distortion and even failure of the electronic system. In this study, we aim to explore the dynamic output voltage characteristics of board level mounted BaTiO3-MLCC under high impact. A mechanical-electric effect modeling method of BaTiO3-MLCC dynamic output voltage based on dynamic model and piezoelectric effect is proposed. The high impact experimental study has been carried out, the results show that the dynamic output voltage curve of BaTiO3-MLCC and the dynamic strain curve of PCB at the installation position accord with the sinusoidal oscillation law of exponential attenuation. The characteristic frequencies of dynamic voltage curve completely include that of dynamic strain curve, and their fundamental frequencies are the same. These laws are the same as those characterized by the mechanical-electric effect model, which proves the feasibility and correctness of the proposed mechanical-electric effect modeling method.
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