Electronic Film Capacitors, Inc. d/b/a EFC/Wesco Film Dielectrics

Electronic Film Capacitors, Inc. d/b/a EFC/Wesco

Film Dielectrics

Basic Properties | Typical Temperature Characteristics

Basic Properties of Film Dielectrics

Property Polypropylene Polyester (Mylar) Polycarbonate Polystyrene

Dielectric Constant 2.3 3.2 3.0 2.5

Density 0.905 1.395 1.20 0.95

Area Factor
in²/lb/mil 30.600 19.800 23.100 26.500

Temperature Rating
(for capacitors) °C 105 125 125 85

Dissipation Factor
% at 10⁶ Hz 0.02 1.6 1.0 0.01

Flatness of Electrical
Properties Excellent Fair Good Excellent

Dielectric Strength
V/mil at 1 mil 7.000 7.000 4.000 5.000

Tensile Strength
lb/in² 28.000 30.000 8.000 5.000

Moisture Sensitivity None Small Moderate None

Typical Temperature Characteristics

Polypropylene

Polyester (Mylar®)

Polycarbonate

Polystyrene

EFC will manufacture to any non-standard value and size. Please consult factory for special requirements.

Specification Summary | Catalog Nomenclature | Catalog

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Electronic Film Capacitors, Inc. d/b/a EFC/Wesco

Electronic Film Capacitors, Inc. d/b/a EFC/Wesco

Reidville Industrial Park
41 Interstate Lane
Waterbury, CT 06705 Telephone: (203) 755-5629
Fax: (203) 755-0659
Email: efc@filmcapacitors.com

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Electronic Film Capacitors, Inc. d/b/a EFC/Wesco