BFC237321155

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A film capacitor, also known as a plastic film capacitor, self-healing capacitor, polyester capacitor and dielectric capacitor is a type of capacitor commonly used in electronic devices. It uses a polymer film as the dielectric material instead of paper or ceramic, and is usually cylindrical in shape. The model BFC237321155 is a high-performance, general-purpose film capacitor, and is suitable for a variety of applications.

Due to its robustness, film capacitors are often used in applications that require a high degree of miniaturization, such as motor drives, switching power supplies, audio power amplifiers and board-level interconnects. Its dielectric material ensures stable capacitance, low acoustic noise, and low ESR. The design also features high current carrying capacity and low impedance, making it ideal for use in power supply circuits. In addition, its size and shape make it suitable for applications where space is limited.

The BFC237321155 comprises of a metalized polypropylene film, which is then encapsulated in thermally-bonded epoxy-resin or polyurethane-resin-molded to create a cylindrical shape. This epoxy forms the dielectric barrier, and its dielectric constant ranges between 2.30 and 2.35, and its dissipation factor ranges between 0.002 and 0.006. The maximum DC operating voltage of this capacitor is 300V, and it has a temperature range of -40°C to +85°C.

To determine the working principle of the BFC237321155 film capacitor, it is first important to understand the working principle of film capacitors and their construction in general. Film capacitors use a dielectric material, such as plastic film, instead of paper or ceramic, as the medium between two electrically-conductive surfaces. The two surfaces form the separation between the plates of the capacitor, which store charge; the higher the relative permittivity of the dielectric material, the greater the capacitance.

When using the BFC237321155, an alternating voltage is applied between the two terminals of the capacitor. Since the dielectric material is insulated between the two conductive electrodes, an electric field is created in the dielectric material. This causes the electrons in the material to move, and thus a current flows through the device. This current opposes the flow of the applied voltage, resulting in the phenomenon of impedance. This impedance opposes the rate of change of voltage across the device. In this way, the BFC237321155 functions as a capacitor, storing energy in the electric field of the dielectric material.

There are numerous applications for the BFC237321155 film capacitor. It is often used in power supply circuits due to its low impedance, high current carrying capacity and low acoustic noise. Due to its size and shape, it is ideal for low-profile applications, such as audio power amplifiers, motor drives and switching power supplies. Additionally, its low ESR ensures stable capacitance, making it suitable for RF applications, such as antenna tuning and RF communication systems.

In conclusion, the BFC237321155 is a type of film capacitor which is suitable for a variety of applications, from motor drives to RF applications. It utilizes a metalized polypropylene film as its dielectric material, and encapsulated in thermally-bonded epoxy or polyurethane resin for its cylindrical shape. This well-designed construction ensures a low impedance, high current capacity, low acoustic noise and low ESR.

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