Polyester Capacitors

Polyester capacitor applications

Polyester capacitors or PET capacitors are used in many areas where leaded capacitors can be accommodated.

Some typical polyester capacitor applications include:

• Circuits where the capacitor needs to handle high peak current levels
• General coupling and decoupling applications and DC blocking.
• Filtering, where high tolerance levels are not required.
• Audio applications
• Power supplies where the very high capacitance elvels of electrolytic capacitors are not needed.

Polyester capacitors are often regarded as general purpose capacitors. They provide a good level volume efficiency when compared to other types of film capacitor, and this comes at a moderate level of cost.