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Combination Film Capacitor Construction

Construction with this dielectric is typically extended foil in either the film and foil types or metallized film.  Combination film capacitors, or hybrids, utilize the best of both worlds with high current handling capability found in film/foil designs coupled with the added benefit of self healing capability common in metallized constructions.

  General Dielectric Information (PDF)

Encasement

Typical encasements are wrap and fill, preformed box, epoxy or durez dipped and metal enclosed. Since polypropylene is not very sensitive to moisture absorption, versatile encasement is possible. It is, however, sensitive to temperatures above 105°C. This rules out some types of encasement. Physically small parts may experience problems in attachment to the circuit boards unless attention is given to thermal aspects.

  Encasement Information (PDF)

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*Mixed dielectrics also available - contact factory