BFC247990122

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Film capacitors are components that store electrical energy in an electric field. They are typically constructed from a dielectric layer, usually polyester, with a thin metal or ceramic film. The construction of these capacitors results in a very high dielectric strength and very low losses in comparison to other capacitor types. This makes them ideal for use in a wide variety of applications, including signal processing, power supply design, and high-frequency communications.

BFC247990122 capacitors are film capacitors with an industry-standard 2.7mm x 4.7mm (74HC) package. This package is suitable for applications with limited PCB space, such as mobile phones and other consumer electronics devices. The device is available in surface-mount (SMT) construction, as well as through-hole, which makes it suitable for automated manufacturing processes.

The device has a voltage rating of 250 volts AC/DC, with a capacitance range of 0.47µF to 2.2µF. Notable features include high temperature operation (125°C) and very low ESR (<300mΩ).

The working principle of a film capacitor is based on the dielectric layer that separates the two metal layers. This layer stores the electrical energy in an electric field. When an electric current interacts with the capacitor, an electric field is created around the capacitor. This electric field will cause the electrons to flow from one of the plates to the other. In this process, the charges inside the capacitor are separated, storing the electrical energy.

The BFC247990122 film capacitor is designed to be used in high-frequency applications, such as switched-mode power supplies (SMPS). The low ESR and low inductance of the device allow it to handle high-frequency switching without the need for external components, such as inductors or ferrite beads. It is also suitable for decoupling and power filtering applications, thanks to its high capacitance and wide voltage range.

In summary, the BFC247990122 film capacitor is a versatile component suitable for a wide range of applications, in particular high-frequency signal processing and power supply design. Its ability to operate at high temperature and low ESR make it an ideal choice for space-constrained consumer electronics.

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