Classification of film capacitors

1. Classification by electrolyte

Different electrolytes can divide film capacitors into three types:

Type T: PET–Polyethylene

P type: PP-Polypropylene

Type N: PEN-Polyethylene Naphthalate

2. Classification by line end

Film capacitors can be divided into two categories: DC film capacitors and AC film capacitors: DC film capacitors refer to film capacitors working in circuits powered by DC power supplies, and can be divided into general categories, power supply electromagnetic interference suppression, pulse types, and precision Category 4; AC film capacitors refer to film capacitors that work in circuits powered by AC power. Motor start-up operation and power factor compensation are divided according to functions. A

Film capacitors can be divided into two categories: DC film capacitors and AC film capacitors: DC film capacitors refer to film capacitors working in circuits powered by DC power supplies, and can be divided into general categories, power supply electromagnetic interference suppression, pulse types, and precision Category 4; AC film capacitors refer to film capacitors that work in circuits powered by AC power. Motor start-up operation and power factor compensation are divided according to functions. A

Film capacitor advantages:

The film capacitor has many excellent characteristics, so it is a capacitor with excellent performance. Its main equivalences are as follows: no polarity, high insulation resistance, excellent frequency characteristics (wide frequency response), and low dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the part where the signal is connected, a capacitor with good frequency characteristics and extremely low dielectric loss must be used to ensure that the signal is transmitted without too much distortion. Among all plastic film capacitors, the characteristics of PP capacitors and polystyrene (PS) capacitors are the most significant, and the price is relatively high. In recent years, in order to improve the sound quality of audio equipment, the parts materials used are of higher quality, and the price is not the most important consideration. Therefore, the frequency and number of PP capacitors and PS capacitors used in audio equipment have also increased in recent years.