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Film Capacitors

BFC236726274 application field and working principle

Film capacitors, also known as film dielectric capacitors, polyester capacitors, plastic capacitors, or paper capacitors, are components of electronic circuits used for filtering, tuned circuits, bypass circuits, de-coupling circuits, timing circuits, and voltage multipliers.

Film capacitors are manufactured using an electrical grade plastic film is sandwiched between two metal plates. The two plates are sprayed with a thin metallic film which enables them to serve as the electrical contacts. The resistor body is usually enclosed in a non-conductive plastic case that provides mechanical strength and external insulation.

The BFC236726274 series is based on polypropylene dielectric technology, which has the following characteristics: high dielectric constants, high temperature and humidity stability, high CV rating, excellent insulation resistance, and superior AC performance. The BFC236726274 series has a wide capacitance range from 1 to 10,000 pF, with voltage ratings of 6.3 to 630 VDC. This series of film capacitors is especially suitable for circuit applications that require tight tolerances, high accuracy, high reliability, and low dielectric absorption.

The working principle of film capacitors is based on the concept of electrical charge storage. In the case of film capacitors, the dielectric is charged by static electricity, and the amount of charge is determined by the capacitance of the capacitor and the electric field strength that appears in the dielectric material.

When a voltage is applied, the electrical charges move from one plate to the other. This creates an electric field in the dielectric material which causes displacement currents to flow. The current flows from one plate to the other, and the stored energy is released when the electric field is reversed. The stored energy is used to oppose the applied voltage, while creating a small current in the circuit.

The BFC236726274 is suitable for high-frequency applications, such as power supplies, telecommunication, TV signal processing, etc. Its design makes it an ideal choice for suppressing EMI/RFI noise in the frequency range of up to 1 MHz. The stability of the BFC236726274 enables it to operate in a wide temperature range of -45 to +85 degrees Celsius. Its low dissipation factor and excellent self-healing capability make it resistant to voltage surge and shock.

Overall, the BFC236726274 series of film capacitors provides excellent performance and reliability in almost any electronic application requiring tight tolerances, high accuracy, and stability. Its wide capacitance range, high voltage rating, and improved frequency response make it an excellent choice for a wide range of applications.

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