Study on the mechanical-electric effect law of dynamic output voltage of board level mounted BaTiO3-MLCC under high impact

• The mechanical-electric coupling model of board level mounted BaTiO 3 -MLCC dynamic output voltage under high impact is established. • The dynamic output voltage curve of BaTiO 3 -MLCC and the dynamic strain curve of PCB at the installation position of BaTiO 3 -MLCC have exponentially attenuated sinusoidal oscillation characteristics, their fundamental frequencies are the same, and their peaks and peaks have a linear relationship. • This study contributes to reveal the dynamic output voltage response behavior of board level mounted BaTiO 3 -MLCC under high impact. BaTiO 3 -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 BaTiO 3 -MLCC under high impact. A mechanical-electric effect modeling method of BaTiO 3 -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 BaTiO 3 -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.