Film capacitors are capacitors with a thin dielectric film as the medium for separation between the two conductive surfaces. The BFC236866124 is no exception, possessing a film dielectric layer and two metallic electrode plates attached to opposite faces. This capacitor is designed to be used across a variety of areas where electrical energy must be stored and then released, such as line filters for AC applications and for motor drives. It has a long lifespan (15,000 hours) and is available in both vertical and horizontal mounted packages.

Working principle

Film capacitors make use of the polarization of a dielectric material that takes place when an electric field is applied to it. This polarization creates an electric field within the dielectric material that pushes against the applied field. This opposing electric field reduces the field across the plates and hence, opposes the flow of current. The capacitance of a film capacitor is determined by the ratio of the area of the electrode plates to the distance between them (plate separation).

When the BFC236866124 is connected to a DC supply voltage, electrons flow from the negative of the supply to the positive. During this time, the electric field across the dielectric causes the molecules in the dielectric to align with the electric field lines. The electric field also causes the molecules to start vibrating, which further reduces the overall electric field across the dielectric. This increases the capacitance and hence, the capacitance of the BFC236866124.

When the DC supply voltage is removed, the electric field is no longer applied to the dielectric. The molecules in the dielectric start to align randomly again and the capacitance of the capacitor is reduced. This is why film capacitors typically have a lower dissipation factor than other types of capacitors. This makes them ideal for applications such as power conditioning and filtering, where the amount of stored charge must be maintained over time.

Application fields

The BFC236866124 is designed to be used in high frequency applications, such as radio communications. Its low dissipation factor makes it suitable for use in power conditioning and filtering circuits as well as modems, which require rapid charge and discharge cycles. The BFC236866124 can also be used as an AC line filter or in motor drives, where it can reduce the noise generated by the motor. Due to its small size, it is also often used as an output filter in AC-DC power supplies.

It is important to note that the plastic casing of the BFC236866124 can be damaged due to excessive vibration, so care must be taken when using it in this type of application. Furthermore, it is not suitable for high voltage applications, as it can be easily damaged by high voltages. As such, it should be used in applications that require a moderate voltage, such as audio amplifiers and power supplies.

The BFC236866124 is a versatile and reliable film capacitor that is suitable for a wide range of applications. Its long lifespan and low dissipation factor make it an excellent choice for power conditioning and filtering circuits, as well as AC line filters and motor drives. It is important to understand the working principle and application fields of the BFC236866124 in order to ensure that it is used in a safe and effective manner.