BFC238581202

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Film Capacitors

Film capacitors, also known as polyester or mylar capacitors, are widely used in applications such as power supplies, motor drives, switching regulators, amplifier, and switch mode power supplies. They are based on an electrical insulating polymer film with conducting material. The polymer is a polycarbonate, polyester, polypropylene, polysulfone, or tetrafluoroethylene film that represents the dielectric between the plates of a capacitor and the conducting material may be copper, carbon, aluminum, or other metals.

BFC238581202

Application Field

The BFC238581202 is a Polyester film capacitor designed to provide a low cost alternative to ceramic chip capacitors and other film capacitors in applications requiring high stability, long life, and reliable performance. It is ideal for use in AC power lines, DC power supply filters, and high frequency applications such as AC motor control devices and inverters. It is especially useful in circuit designs that require high frequency operation and are sensitive to capacitance variation. The BFC238581202 is also widely used in digital switching regulators, motor drives, amplifier, and switch mode power supplies.

Device Structure and Working Principle

The BFC238581202 is constructed from two metallized polyester film layers and a conductive epoxy coating. The two metallized layers serve as a dielectric and the conductive epoxy serves as the plate. A capacitor is formed when the plates are connected together. The construction of the BFC238581202 is such that the metallized layers and conductive epoxy form a stable structure, which enables the device to have a high tolerance for temperature changes and greater reliability than other types of film capacitors.

Advantages

The BFC238581202 offers several advantages over other types of film capacitors. Its construction is tailored for digital switching regulators, motor drives, amplifier, and switch mode power supplies, providing higher performance in those circuits. Because the BFC238581202 is made from a polyester film, it offers excellent temperature stability, low parasitic inductance, and long operational life. Finally, since the Epoxy is providing the electrical connection between the metallized layers and the external circuitry, the BFC238581202 has an extremely low ESR compared to other film capacitors.

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