24FB4455-F

Film Capacitors

A film capacitor, also known as a plastic film capacitor, is a type of capacitor constructed with metal-film technology. It uses a very thin plastic film, the dielectric medium, sandwiched between two metal electrodes, typically aluminium. Film capacitors are highly reliable and offer excellent electrical properties.

The 24FB4455-F is a film capacitor, constructed with metallized film technology. It has a leaded form and operates at an operating temperature range of -40 to +85 C. The 24FB4455-F is mainly used in high-frequency AC applications such as power-supply and signal processing. It can also be used in applications where high accuracy/precision is required.

Application Field of 24FB4455-F

The 24FB4455-F is mainly used for high-frequency AC applications such as power-supply and signal processing. Due to its low dissipation factor as well as excellent temperature stability, the 24FB4455-F is also suitable for RF and high-frequency filters. It can also be used in applications that need high accuracy/precision, such as in timer circuits, motor control circuits, and audio and video signal processing.

Working Principle of 24FB4455-F

The working principle of a film capacitor is based on the principle of capacitance. When a voltage is applied across the two metallic electrodes of the capacitor, electrical charges accumulate on the metallic surfaces of the electrodes. The dielectric medium, which is a very thin plastic sheet, acts as a barrier preventing electrical charges from flowing between the two conductors. This accumulated electrical charge stored on the capacitors’ electrodes is known as the capacitance or capacitive reactance.

The capacitance of a film capacitor depends on its physical parameters such as its size, shape, and thickness of the dielectric. Generally, the higher the capacitance of a film capacitor, the lower its self-inductance. The 24FB4455-F has a capacitance of 4.55μF at a rated voltage of 25V, making it suitable for applications that need high capacitance and low impedance.