Film capacitors use metal foils as electrodes, which are overlapped with plastic films such as polyethylene, polypropylene, polystyrene, or polycarbonate. These components are then wound into a cylindrical structure. Due to their high insulation resistance, excellent frequency characteristics, and low dielectric losses, film capacitors play a crucial role in electronic devices.
However, due to factors such as the manufacturing process and materials, film capacitors exhibit certain errors. The errors in film capacitors can often have adverse effects on the performance of electronic products. They may lead to instability and a decrease in reliability. Therefore, reducing errors in film capacitors is critical for optimizing the quality of electronic products.
Material Issues in Film Capacitors:
The uneven thickness of the raw materials used in film capacitors can lead to deviations in capacitance values between electrodes, resulting in errors.
Temperature and Humidity:
Film capacitors are sensitive to changes in environmental temperature and humidity. Variations in temperature and humidity can alter the physical and chemical properties within the capacitor, leading to errors.
Aging:
Over time, film capacitors may undergo aging, causing changes in their capacitance. This aging process can contribute to errors in capacitance values.
Post time: Nov-22-2023