Abstract: Burn-out of a microwave power device due to the poor bonding between beryllium oxide and base metal sink was investigated using Sound Seanning technique.

• 摘要：利用声学扫描检测技术，揭示了热烧毁的微波功率器件氧化铍陶瓷基片与底座金属散热片的焊接不良现象；