aluminum foil for film capacitor

Film classification

According to the type of plastic film, it is divided into: polyethylene capacitors (also known as Mylar capacitors), polypropylene capacitors (also known as PP capacitors), polystyrene capacitors (also known as PS capacitors) and polycarbonate capacitors.
Its structure is the same as that of paper capacitors, and the medium is polyester or polystyrene. Polyester film capacitors have high dielectric constant, small size, large capacity and good stability, and are suitable for bypass capacitors. Polystyrene film capacitors have low dielectric loss and high insulation resistance, but have a large temperature coefficient and can be used in high-frequency circuits.

Line end classification
Film capacitors can be divided into two categories: DC film capacitors and AC film capacitors: DC film capacitors refer to film capacitors that work in circuits powered by DC power, and can be divided into general-purpose, power supply electromagnetic interference suppression, pulse and precision Class four; AC film capacitors refer to film capacitors that work in circuits powered by AC power, and are divided into motor startup and operation, power factor compensation, etc. according to their functions.

The first production process for thin film capacitors is slitting the aluminum foil , we could provide 8079 aluminum foil ,1235 aluminum foil for the thin film capacators

Thickness:0.005mm 0.006mm

Width: 5mm up

ID: 40mm 76mm or as required

Core: steel or aluminum

Top grade aluminum foil for film capacitor supplier in China ,TMR Aluminum welcome your inquiry.

Advantage of aluminum foil for thin film capacitors

Film capacitors are excellent capacitors due to their many excellent properties. Its main characteristics are as follows: non-polarity, high insulation resistance, excellent frequency characteristics (broad frequency response), and very small dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the part where the signals are cross-connected, capacitors with good frequency characteristics and extremely low dielectric loss must be used to ensure that the signal will not be too distorted during transmission. Among all plastic film capacitors, polypropylene (PP) capacitors and polystyrene (PS) capacitors have the most significant characteristics. Of course, the prices of these two capacitors are relatively high. However, in order to improve the sound quality of audio equipment, the parts and materials used have become more and more advanced, and price is not the most important factor to consider. Therefore, the frequency and quantity of PP capacitors and PS capacitors used in audio equipment are also increasing. Readers can often see XX brand equipment, claiming how many PP quality capacitors or PS quality capacitors of XX brand are used as the standard for sound quality, and the reason is here.