BFC237517203

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Film Capacitors

Film capacitors, or film dielectric capacitors, are electrical capacitors with a thin plastic film as the dielectric, sometimes combined with paper as a separator. They are usually radial leaded components with epoxy resin body or aluminum cases, and radial or axial terminals.

The BFC237517203 is a film capacitor series designed for specific application field. Includes X1, Y2, Y3, Y4 classes and long life performance. They are used in many fields such as general electronic components, lighting system, home appliances, motor drive and automotive electronics.

Features and Benefits

• working temperature: -40°C~+90°C
• Dielectric withstanding voltage: AC3,300V, AC2,300V, AC1,500V
• Rated voltage: 250V, 350V, 400V, 450V, 500V, 600V
• Rated capacitance: 0.047MFD~3.3MFD
• Low dissipation factor
• High insulation resistance
• High stability over humidity range of 25% to 100%

Working Principle

Film capacitors works on the principle of electrostatics. It works when there is a dielectric material, usually in a film, separating two charged plates. Opposite charge levels in between the two plates attract each other, creating a potential difference across an insulating film.

When a direct current (DC) is applied to the capacitor, a charge builds on each plate. As the charge builds, the dielectric is at a greater potential, and the attraction between the plates grows stronger. The maximum charge is the size of the capacitance, and the size is determined by the area of the plates and the type of dielectric used.

The charge stored on the plates is called capacitance. As the capacitance grows, the number of electrons stored on either plate decreases, and the capacitance of the film capacitor does not change significantly over time. As a result, the capacitance cannot diminish or change significantly, unlike other types of capacitors.

Applications

Film capacitors are pretty common and have many uses. They are employed in all kinds of electronic applications, particularly in power supplies, UPS systems, audio amplifiers, and low voltage scopes. They are also often used as coupling and decoupling devices in AC and pulse applications. Additionally, they are widely used in frequency dependent circuits.

Film capacitors are designed to be of high-capacity, have high-dielectric strength, low dissipation factor, low loss at resonance, and be highly reliable. Due to their high stability over time, they are often used in switching and motor drive circuits in order to maintain the required high-frequency return.

Conclusion

The BFC237517203 is a film capacitor series used for a variety of power Electronics, home appliances, motor drive, and automotive electronic applications. It has excellent wet rating and low dissipation factor. With dielectric withstanding voltage of up to AC3,300V and rated voltage of up to 600V, this capacitor offers a unique combination of reliable performance and high capacity for optimal power density in a wide variety of applications.

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