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1.1 Classification of dielectrics

Thin film capacitors will be different with the material classification of the media, resulting in significant differences in the characteristics and applications.

According to the structural type of abbreviation, in DIN41379, describes the media and basic technology and applications.
The last letter of the abbreviation, indicating the type of media:
T=Polyethylene terephthalate (PET)
P=Polypropylene (PP)
N=Polyethylene naphthalate (PEN)
Prefix for M (Metallization), refers to the metal structure of the film capacitors.


 
Figure 1 DIN 41379 film capacitor classification
*) MFP and MFT are made of metal foil and metallized film film of the red structure, they do not belong to DIN41379
 
 

1.2 Film and metal foil deployment

For a better understanding of the internal structure of the capacitor, Figure 2 shows two typical combinations of thin film and metal foil stacking.



Figure 2 Typical examples of stacking of thin films and metal foils



 Figure 3 shows the relationship between the various films and the metal foil and the type of capacitor

 

1.3 Structure classification 

Winday  is manufacturing film capacitors by winding
 
 

1.31 Winding technology

​In the general production process, the capacitor is a separate cylindrical reel, rolled metal film and metal foil combination, and then covered with an insulating shell or coating.



Figure 4 generally produces winding technology
Among the MKT, MKP and MFP series, we have a range of types,
Winding press and covered with an insulating coating, or into a plastic housing, facilitates space saving, as well as cylindrical winding capacitors.
In the absence of the use of repressed plane winding capacitor, installed in the cylindrical shell of the design, with more excellent features.

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