BN104L0472K--

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Film capacitors have been widely used in an extensive range of applications in the past few decades due to their compact size, low leakage current, and high working temperature. The BN104L0472K is a general-purpose film capacitor belonging to this family of components. To find out more about this device, this article will cover its application area and working principle.

Application Field

The BN104L0472K is primarily used for bypass or decoupling applications. It is designed to provide low ESR and high capacitance values in a single package. The device is constructed from a film dielectric combined with two metallized layers which are placed on the outer surfaces of the dielectric. This provides a relatively small form factor that is perfect for applications which have limited space for mounting components.

The BN104L0472K is especially suitable for bypassing or decoupling in radio frequency (RF) and ultra-high frequency (UHF) applications. Such applications require capacitors with high IC values in order to reduce noise or to provide additional power. The BN104L0472K provides this with low ESR values which minimize power dissipation and can be used together with other types of filter components such as inductors.

The device is also suitable for power supply and power filter applications, providing greater stability due to its low ESR. It can be used in signal line coupling, motor drive control, and high frequency switching power supply circuits. It can also be used as a feedback capacitor in voltage regulators in order to control the output voltage.

Working Principle

The BN104L0472K consists of a thin film of dielectric material which is sandwiched between two copper metallized layers. This creates a parallel-plate capacitor, also known as a capacitor with two metallic plates and a dielectric material in between. The two metal plates are connected to two terminals and the surrounding air serves as a dielectric medium.

The capacitance of the BN104L0472K is determined by the area of the two metal plates, the type of dielectric material used, and the distance between the two plates. As the two metal plates move closer, the capacitance increases. When the two plates move further apart, the capacitance decreases. The dielectric material used is usually polypropylene or polyester, which provides good insulation and prevents any electrical current from flowing between the two plates.

The BN104L0472K is designed to provide very low ESR values, which is the ratio of reactance to resistance of the component. This contributes to the low dissipation factor of the capacitor, which further ensures that the capacitors are able to provide their rated values of capacitance for an extended period of time. This makes the BN104L0472K ideal for applications where long-term stability is important.

Conclusion

The BN104L0472K is a general-purpose film capacitor that can be used in a number of applications, such as bypass or decoupling, power supply, power filter, signal line coupling, and motor drive control. The device is designed to offer very low ESR and high capacitance values in a single package, making it ideal for applications which require long-term stability. Furthermore, its small form factor allows it to be used in applications which have limited space for mounting components.

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