Reliability assessment of a MEMS microphone under shock impact loading

In this paper the shock impact reliability of a MEMS microphone is studied through experiments and finite element simulations. The maximum acceleration tolerance of the device is studied and the effect of shock impact orientation is also investigated. Finite element method is employed to determine the potential failure locations of the MEMS structure. Several challenges of the modeling process, such as the large differences in dimension, the complexity of the structures, and the material properties of the materials in the MEMS devices, are investigated and solutions are presented.