Why Does X2 Capacitor Have A Failure Mode?
Have you ever encountered a failure of a Safety Ceramic Capacitor X2 Type?
Let's Explore the Failure Modes of X2 Capacitors Together: Symptoms and Failure Prevention Recommendations.
| Failure Mode | Core Mechanism | Key Symptoms |
| Open Circuit | Internal conductor/electrode breakage | No current flow; Equipment malfunction |
| Short Circuit | Dielectric breakdown | Excessive inrush current; May trigger circuit breaker tripping; in severe cases, the capacitor case may bulge, smoke, or even catch fire. |
| Parameter Drift | Film dielectric aging | Significant decrease in capacitor capacitance |
Failure Prevention Recommendations:
Component Selection Matching: Strictly select X2 capacitor application with appropriate specifications based on circuit operating conditions. Ensure that the rated voltage, rated temperature, and ripple current all meet the design requirements.
Environmental Control: Avoid prolonged exposure of capacitors to high-temperature environments, high-humidity environments or corrosive environments.
Electrical Protection: Add surge suppression components (such as varistors) and overload protection components to the circuit to reduce the impact of voltage spikes and overcurrents on Capacitors for Interference Suppression X2.
Regular Maintenance: For Class X2 Safety Capacitors in critical equipment, it is recommended to conduct electrical parameter testing once every 1–2 years to identify potential failure risks in advance.
Ending:
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WEE Technology Published on Aug 27, 2025