Causes and Countermeasures for Capacitor Failure: Open Failure
The main causes of open failure are mainly disconnection and significant increase in resistance! Introducing how capacitors fail.
When a capacitor fails open, the circuit becomes completely disconnected. For example, using a large-capacity capacitor in the power supply smoothing circuit can flatten a voltage waveform that resembles a large wave into a stable DC voltage. However, if the capacitor opens, high voltage may be applied to the circuit, potentially causing semiconductor failure. The main causes of open failure are disconnection or a significant increase in resistance. These often occur at the connection points between the capacitor's external terminals and the wiring. Since the external terminals, internal wiring, and structure vary depending on the type of capacitor, there are various types of open failures. In addition to usage of the capacitor, factors such as vibrations or shocks during transport, and the arrangement of equipment on the circuit board can also contribute to open failures. Our related catalog provides a wealth of information on various failure phenomena and cases, as well as causes and countermeasures. Please feel free to download and take a look. *For more details, please refer to the PDF materials or feel free to contact us.*
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