METALLIZED FILM CAPACITORS AND

Eurofarad film capacitors are obtained by winding two or more layers
of dielectric plastic film and metal foil.
The metal layers are applied by evaporation under vacuum on the
dielectric ( metallized film capacitors ) or consist of separate metal foils
( film-foil capacitors ).
Generally, the coils of each of the metal foils are interconnected by a
deposit of several metal alloy layers. The leads are connected by
soldering or brazing.
Encapsulation (wrapped, molded, tube or metal case) ensures
adequate resistance to climatic, thermal and mechanical stress.
PROPERTIES OF DIELECTRIC FILMS
Polycarbonate (P.C. )
A film adapted for manufacturing precision capacitors requiring high
stability of the capacitance value and high operating temperature. The
temperature coefficient and dielectric losses are low.
Polyester (Polyethylene terephtalate, P.E.T. )
Capacitors with smaller dimensions can be manufactured due to the
high dielectric constant and excellent electrical performance of this film.
Metallized polyester capacitors have also outstanding self-healing
properties.