Classification of film capacitors
Dielectric classification
Film capacitors can be classified into three types according to the different dielectrics as follows.
T-type: that is, PET -Polyethylene (polyethylene p-phenylene dibromide (or ester)) P-type: that is, PP-Polypropylene (polypropylene)
N-type: that is, PEN-Polyethylene Naphthalate (polyethylene)
Film Classification
According to the type of plastic film, it is divided into: polyethylene-capacitor (also known as Mylar capacitor), polypropylene capacitor (also known as PP capacitor), polyphenylene
(also known as PS capacitors) and polycarbonate capacitors.
리플 알루미늄 전해 커패시터

리플 알루미늄 전해 커패시터

The structure is the same as paper capacitor, and the dielectric is polyester or polystyrene, etc. Polyester film capacitor has high dielectric constant, small size, large capacity, good stability, and suitable for bypass capacitor. Polystyrene film capacitor, with low dielectric loss and high insulation resistance, but large temperature coefficient, can be used in high frequency circuits.
Wire-end classification
Film capacitors can be divided into two categories: DC film capacitors are film capacitors working in circuits powered by DC power supply, which can be divided into four categories: general-purpose, power supply electromagnetic interference suppression, pulse and precision; AC film capacitors are film capacitors working in circuits powered by AC power supply, which can be divided into motor starting operation, power factor compensation, etc.
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