BFC247990019

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Film Capacitors

Film capacitors, generally known as the film dielectric capacitors, are capacitors with a dielectric as thin film or foil made of various materials, including polyester, polycarbonate, polypropylene, polytetrafluoroethylene (PTFE), polyphenylene sulfide, mylar, and others. They are mainly used in high frequency, low-voltage applications, such as automotive electronics and audio-video equipment, as well as in bypass and coupling circuits.

The BFC247990019 is a film capacitor with a dielectric material of polycarbonate. It has a capacitance range of 0.0047–0.10uF and a voltage range of 1.0–10.0V. The operating temperature range is -55°C to +105°C. It is ideal for automotive ECU and lighting systems, or for providing noise reduction in switching power supplies in home appliances, cameras, and other electronic equipment.

Application Field

The BFC247990019 is mainly used in automotive electronics and audio-video equipment, as well as in bypass and coupling circuits. It provides high frequency noise suppression for switching power supplies in home appliances, cameras, and other electronic equipment. It can also be used in high-frequency transmission lines and base station antennas for telecommunications applications. Additionally, it is suitable for pulse applications, such as laser power supply, motor drive, laser welding, and laser flasher.

Working Principle

A film capacitor is composed of two metal plates separated by a thin dielectric film. When an AC current flows through the capacitor, an electric field is created between the two plates, which stores energy due to the dielectric strength of the thin film. In the BFC247990019, the dielectric material is polycarbonate, which is known for its high dielectric strength and excellent heat resistance, making it well-suited for pulse applications and high-frequency applications.

When the AC current is removed, the electric field between the two plates gradually vanishes and the energy stored in the capacitor is released. This ability to store and release energy quickly makes film capacitors ideal for use in bypass, coupling, and blocking applications, where it is essential to ensure that no energy is lost in the form of AC noise.

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