How to avoid the failure of metal film capacitors

The characteristics of metal film capacitors are outstanding, with good temperature characteristics and high capacity density, but calculations such as once used may cause burning and bursting, resulting in devastating results. Its high reliability is based on strict use conditions. At the same time, the product quality must be excellent, so the following methods are used to avoid the problem of metal film capacitors working.

1. Choose a good quality product. If the metal film capacitor is not good enough, its reliability is not only low, but also very easy to fail. Therefore, choosing the right and appropriate product is the primary condition for ensuring reliability. A poor quality metal film capacitor can cause problems if it is mounted on a circuit. If you can't guarantee the quality of the product you choose, I recommend that you do not use metal film capacitors, especially in DC-DC circuits and high-power charge and discharge circuits.

2. Low-impedance circuits use failures caused by excessive voltage. The circuit used for the metal film capacitor has a resistor-protected circuit and a low-impedance circuit without resistance protection. For circuits with resistance protection, the resistor acts as a step-down and suppresses the passage of large currents.

3. There is no problem in circuit design and product selection. The performance parameters of metal film capacitor products can meet the circuit signal characteristics. However, often we cannot guarantee that both of the above tasks are done in place. It is very likely that such a failure problem will occur during use.

After reading the contents of this article, do you understand, I hope that the content of this article can help everyone.