Why film capacitors are so powerful

In the era of rapid development of modern electronic technology, film capacitors have occupied an important position in the field of electronics with their unique working performance. Although the public may not be as familiar with film capacitors as some consumer electronic products, film capacitors are indispensable components in electronic products and electronic devices.

Film capacitors are an important type of capacitor in electronic components. They are made of one or more layers of very thin insulating plastic films as dielectrics and metal layers evaporated on both sides as electrodes. Film capacitors are widely used in electronics, home appliances, communications, electricity and other fields due to the advantages of film capacitors such as their small size, large capacity, good high-frequency characteristics, low loss, self-healing, and high reliability.

1. Small size: Film capacitors can be made into very small sizes, suitable for use in places with limited space.

2. Large capacity: Film capacitors have large capacity and are suitable for applications that require storing more electrical energy.

3. Good high-frequency characteristics: Film capacitors have excellent high-frequency characteristics and can work normally at higher frequencies. They have low impedance and are suitable for high-frequency circuits and pulse circuits.

4. Low loss: Film capacitors have low dielectric loss and generate little heat in the circuit, thereby improving the overall efficiency of the circuit, which is important for applications that require high power transmission and high energy conversion, such as power management, amplifiers, filters, etc.

5. Self-healing: When a tiny breakdown or short circuit occurs inside the film capacitor, the film capacitor can automatically repair these defects by vaporizing the electrode material near the fault, returning to normal working state, and also improving the reliability and service life of the capacitor. This is the self-healing function of the film capacitor.

6. High reliability: Film capacitors have high reliability and can work normally under harsh environmental conditions. Film capacitors have a long service life and are not easily damaged. They can maintain stable performance even under harsh conditions such as high temperature, high pressure or high humidity.

Because of the many advantages of film capacitors, film capacitors are widely used in power systems, communication equipment, automotive electronics and other fields.