Polypropylene film capacitors: Low loss factor makes them an ideal choice for high-frequency circuits

In the vast world of electronic components, capacitors, as a basic electronic component, play an important role. Among the many types of capacitors, polypropylene film capacitors have emerged in high-frequency circuits with their unique performance advantages and have become the first choice of many designers and engineers. Among them, the loss factor of polypropylene film capacitors is generally low, usually between 0.1% and 0.2%, which makes it show excellent performance in high-frequency circuits.

As an important parameter to measure the degree of energy loss of capacitors in AC electric fields, the loss factor has a vital impact on the performance of capacitors. An ideal capacitor should have the lowest possible loss factor to reduce energy loss during charging and discharging, and improve the working efficiency and service life of the capacitor. And polypropylene film capacitors stand out in high-frequency circuits with their advantage of low loss factor.

As a dielectric material for capacitors, polypropylene film has a series of excellent electrical properties. Among them, high insulation resistance is a highlight of polypropylene film. Insulation resistance is an important indicator to measure the conductive performance of capacitor dielectric materials. The higher the insulation resistance, the worse the conductive performance of the dielectric material, that is, the smaller the leakage current of the capacitor under the action of the electric field. The high insulation resistance characteristics of polypropylene film enable the capacitor to maintain a stable capacitance value during long-term operation and reduce the performance drift caused by leakage current.

In addition to high insulation resistance, polypropylene film also has the characteristics of low dielectric loss. Dielectric loss refers to the energy consumed by the capacitor in an AC electric field due to the polarization, conductivity and other effects of the dielectric material. The greater the dielectric loss, the more heat the capacitor generates during operation, which not only causes the capacitor temperature to rise, accelerates the aging process, but also may cause other faults. The low dielectric loss characteristics of polypropylene film make the capacitor generate very little heat during operation, thereby ensuring the long-term stable operation of the capacitor.

These excellent electrical properties of polypropylene film all help to reduce the loss factor of the capacitor. Low loss factor means that when the capacitor works in a high-frequency circuit, it can more effectively filter out high-frequency noise and interference signals, and improve the circuit's anti-interference ability. At the same time, the low loss factor also enables the capacitor to maintain the integrity and accuracy of the signal during high-frequency signal transmission, reducing signal distortion and attenuation.

In addition, polypropylene film capacitors also have the advantages of high voltage resistance, high temperature resistance, small size, and light weight. These characteristics make it have a wide range of application prospects in high-frequency circuits. Polypropylene film capacitors play an important role in communication equipment, radio and television equipment, computer equipment and other fields. It can not only improve the stability and reliability of the circuit, but also reduce the volume and weight of the circuit and improve the overall performance of the equipment.