Study on Typical Defect Patterns and Detection Methods of Highly Reliable Chip Porcelain Dielectric Capacitors
Capacitors play a vital role in aerospace electronics,and they are indispensable basic components in electronic circuits.These capacitors are widely used in circuits for purposes such as isolation,coupling,bypassing,filtering,tuning,oscillating circuits and so on.Ceramic dielectric capacitors are usually used for resonance,filtering,and coupling,etc.They are generally constructed using a surface-mounted multilayer stack,which consists of a metal inner electrode,a ceramic dielectric,and a metal outer electrode.The current problem is that the defects in the dielectric layer are not detected accordingly,and if there are defects such as voids in the dielectric layer,it is easy to lead to device failure.Therefore,there is a need to solve this problem by using carrying out ultrasonic scanning detection tests.
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