Electronic products consist of various electronic components, each serving a different function—for example, film capacitors.
A film capacitor is a type of capacitor that uses a thin plastic film as the dielectric. The dielectric and metal foil are layered and wound or stacked together, hence the name “film capacitor.”
Film capacitors offer several advantages, including small size, large capacitance, fast frequency response, and excellent thermal stability. These features make them widely used in power electronics, communications, new energy vehicles, and smart grid applications.
All electronic products are designed to operate within a rated voltage. As long as this voltage is not exceeded, the device functions normally. However, if the voltage goes beyond the rated limit, it may cause malfunction or even damage the product.
Many electronic components have good overvoltage tolerance—but what about film capacitors?
Film Capacitors and Overvoltage Tolerance
Film capacitors exhibit strong overvoltage resistance, making them ideal for high-voltage power supplies, power electronic equipment, new energy vehicles, and photovoltaic or wind power systems, where high voltage endurance is crucial.
High Voltage Resistance
Film capacitors are made of metalized film and insulating layers, both of which have excellent voltage resistance. They can withstand high voltages without breakdown or failure, ensuring the reliable operation of the devices they are used in.
Wide Voltage Endurance Range
Film capacitors can typically withstand voltages 1.5 times higher than their rated voltage without damage. Some models can handle even greater voltage surges.
Excellent Stability
These capacitors maintain low leakage current even in high-voltage conditions, ensuring stable performance during extended operation.
Self-Healing Capability
Metalized film capacitors have self-healing properties. If a localized breakdown occurs, the arc causes the metal layer to evaporate around the fault, effectively isolating the point and restoring normal function.
Conclusion
Film capacitors have strong overvoltage tolerance and are well-suited for use in high-voltage environments where robust performance and reliability are required.
This article is provided by JYH HSU (JEC) Electronics. JEC is a research, development, production, and sales-oriented company specializing in manufacturing and selling various electronic components such as capacitors and resistors.
Post time: May-23-2025