Passive components for electronic circuits—polypropylene film capacitors 1

Polypropylene film capacitors, abbreviated as PP film capacitors, are capacitors such as the BQ2060A-E619DBQ that use polypropylene film as the dielectric. They are widely used passive components in electronic circuits, holding a significant position in various fields due to their excellent performance and reliability. Polypropylene film possesses superior electrical properties and chemical stability, enabling PP film capacitors to perform exceptionally well in high-frequency, high-voltage, and high-current environments. This article aims to provide a comprehensive introduction to polypropylene film capacitors. diode

I. Structure

The basic structure of a polypropylene film capacitor includes the electrode layer, dielectric layer, and encapsulating material. The electrode layer is typically composed of metal foil or metallized film to ensure excellent conductivity; the dielectric layer uses polypropylene film to store electric charges; finally, it is encapsulated with a plastic or metal housing to protect the internal structure from external environmental influences.diode

II. Features

1. High Voltage Tolerance: Polypropylene film capacitors can withstand voltages up to several thousand volts, making them suitable for high-voltage applications.

2. Low loss: It exhibits extremely low dielectric loss, making it suitable for high-frequency applications.diode

3. Excellent temperature characteristics: The capacitance value changes minimally over a wide temperature range.

4. High Reliability: Due to the chemical stability of polypropylene film, PP film capacitors have a longer service life.diode