シリコーンゲルで封止されたワイヤの振動解析

抄録

Silicone gel provides good electrical insulation and has high resistance against humidity, high temperature, low temperature and chemical reactions. So, it is often applied to electrical devices to prevent them from corrosion. In such devices, the bonding wires for electrical connection are sometimes fatigue damaged, because under a vibration environment the gel vibrates the bonding wires. To prevent this fatigue damage, we must develop an evaluation method of vibration behavior of a bonding wire protected with gel. However, it is difficult to analyze the vibration behavior of a wire in gel structures. We thus developed a vibration analysis method that takes into account the viscoelasticity of gel and the mechanical correlation between bonding wires and the gel. By comparing these analytical and experimental results, we can confirm the validity of the evaluation method of vibration behavior for a bonding wire protected with silicone gel.