Polystyrene Film Capacitor Values

Polystyrene caps are no longer made. Polystyrene capacitors are capacitors that have a dielectric made up of polystyrene.

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The different types of metallized plastic film capacitor provide different properties each suited to slightly different applications.

Polystyrene film capacitor values. 5 40 c 85 c. All film capacitors use a thin plastic film as the dielectric or insulator but what separates each capacitor type is the material used as the dielectric. The core difference between these capacitor types is the material used as the dielectric and the proper dielectric must be chosen according to the application.

Back in the bad old days they were used when a high tolerance was required. Normally they are non polar. Normally their tolerance is 5 to 10 but high precision polystyrene capacitors are also available with tolerances of 1 and 2.

The values of metallized plastic film capacitors may range anywhere from several picofarads to a few microfarads dependent upon the actual type. They are relatively cheap stable over time and have low self inductance and esr while some film capacitors can withstand large reactive power values. The polystyrene capacitors provide a number of electrical characteristics which make them suitable for a number of applications.

Values of ceramic capacitor range from a few picofarads to around 01 microfarads. Polystyrene film capacitors are used for applications where high reliability and precision is required. Film capacitors are widely used because of their superior characteristics.

A film capacitor is a capacitor that uses a thin plastic film as the dielectric. Their major disadvantage is the low melting point of the film so they cant be machine soldered only hand soldered. There are many types of film capacitors including polyester film metallized film polypropylene film ptfe film and polystyrene film.

They come only in low values usually 10pf to 47nf. Ceramic capacitor types are by far the most commonly used type of capacitor being cheap and reliable and their loss factor is particularly low although this is dependent on the exact dielectric in use. Polystyrene film capacitors use an aluminium foil electrode.

If that was the reason these were polystyrene then any plastic film capacitor of the tolerance would be suitable. Film capacitors plastic film capacitors film dielectric capacitors or polymer film capacitors generically called film caps as well as power film capacitors are electrical capacitors with an insulating plastic film as the dielectric sometimes combined with paper as carrier of the electrodes. These capacitors provide high insulation low leakage low dielectric absorption low distortion and excellent temperature stability.

Polystyrene ps 680 pf.

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