Home About us Products Technical Info Samples Distribution News Contact Parametric Search
ImprintPrint page
Technical Information:
Basic Technical Data for Capacitors
Construction of Plastic Film Capacitors 
Dielectric 
Special Technical Subjects 


You are here: HomeTechnical Info Polyester

Polyester (Polyethylene-terephthalate)

Basic Molecule

Typical Graphs

 

Capacitance change versus temperature

(f = 1 kHz) ( general guide)

  Insulation resistance change versus temperature (general guide)

 

Max. working temperature: +125°C

Film thickness: > 0.7 µm

Production process: extruded, biaxially stretched

  Dissipation factor change versus frequency
(general guide)
 
 
Manufacturing Process for Polyester Film
 
- Extrusion
- Bi-axial stretching
- Crystallisation
tangled felted stretched crystallised (cross-linked, knotted)
   

Fields of Applications for Polyester Capacitors

 

Decoupling
Coupling
Blocking


Properties

 

Advantageous price/performance ratio
Advantageous capacitance/volume ratio
Substitution of low quality electrolytic and tantal capacitors