GDHY CBB28 film capacitors for audio metallized polypropylene film capacitor plastic film capacitor

The usual film capacitor is made of aluminum foil as electrode and plastic film after overlapping and winding together. But there is another way of making film capacitors, called metallized film, which is made by vacuum steaming a thin layer of metal on a plastic film as an electrode. In this way, the thickness of electrode foil can be saved and the volume of capacitor per unit capacity can be reduced. Therefore, the film capacitor is easier to be made into a small capacitor with large capacity.

Film capacitor is known as Self Healing Action. It is assumed that when a small part of electrode is short-circuited due to a weak boundary, the electrode metal around the short-circuited part will be affected by the electrostatic energy or short-circuited current in the matallized polyproplene film capacitor at that time. And cause a larger area of melting and evaporation to restore the insulation, so that the capacitor restores the function of a capacitor again.

Plastic film capacitor is a kind of excellent capacitor because it has many excellent characteristics. Film capacitors for audio main characteristics are as follows: no polarity, high insulation impedance, excellent frequency characteristics (wide frequency response), and very little dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the part of signal cross-connection, it is necessary to use a capacitor with good frequency characteristics and very low dielectric loss to ensure that the signal will not have too much distortion during transmission.    

● Metallized polypropylene inner series structure

● Self-healing

● It can bear high voltage

● Flame retardant epoxy resin wrapping

Widely used in high frequency, direct current and pulse circuits.