BF014D0392J

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Film capacitors, also known as plastic film capacitors or film dielectric capacitors, are composed of a plastic film as the dielectric medium, with a thin metal layer or metal foil vacuum-deposited as the electrode on both sides. The most common plastic films used for film capacitors are: polyester film, polycarbonate film, polypropylene film, polyphenylene sulfide film and PEN film.

BF014D0392J film capacitors are characterized by their non-polar characteristics, wide capacitance range, high insulation resistance and long working life. They are widely used in communication, radio and television, navigation and aerospace industry.

Application fields of BF014D0392J film capacitors

• Pulse power supply for electrical and electronic equipment, such as within X ray tube.
• Voltage regulation filter in the high precision power supply circuit.
• Snubber circuit in inverter bridge.
• High speed, high power storage equipment
• Pulse generator, high speed, threshold circuit.
• Attenuator, isolator.
• High speed video bus and camera circuit.

Working Principle of BF014D0392J Film Capacitors

The capacitor’s internal structure consists of electrodes, dielectric and stripping, generally divided into two layers. The electrode is made of aluminum foil. After being anodized, the flashing process is performed to form two thin and evenly distributed electrodes. The dielectric is usually the plastic film, and it is closely stuck between two electrodes, and them makes the space full of polarized molecules. The two ends of the film are also the two poles of the capacitor. In addition, BF014D0392J film capacitors also adopt a special lamination technology, effectively improving the electrical performance and lifetime of the capacitor.

When an external AC voltage is applied to the capacitor, a small current will flow through the capacitor, which is called the charging current. The minor current flow occurs when the insulation resistance between the two electrodes is small. The charging current increases in a short time, and then reaches a steady state and then flows backwards. The capacitance of the capacitor is mainly related to the area of the electrode, the working voltage and the distance between the two electrodes and the dielectric medium.

Conclusion

BF014D0392J film capacitors are widely used in communication, radio and television, navigation and aerospace industry. They are characterized by their non-polar characteristics, wide capacitance range, high insulation resistance and long working life. Their internal structure consists of electrodes, dielectric and stripping, and they are mainly related to the area of the electrode, the working voltage and the distance between the two electrodes and the dielectric medium. Therefore, BF014D0392J capacitors can ensure the required capacitance performance, thus achieving good performance in the application field.

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