BFC247945104

Film Capacitors

From small signal coupling and decoupling applications to high-power, RF, and pulse circuits, film capacitors are widely used in electronic circuits. The selection of film capacitors depends on the application environment and the specific circuit constraints. To understand the application fields and working principles of film capacitors, let’s take a look at the working principle and technical parameters of BFC247945104 film capacitors.

1. Working Principle of BFC247945104 Film Capacitors

Film capacitors are constructed using a dielectric material that is rolled up and copper lead wires are attached to the two ends. This generates a capacitor with a fixed capacity. When a DC voltage is applied to the two terminals of the capacitor, the capacitor begins to store electrical energy accordingly. Film capacitors are composed of a plastic film and are available with a variety of dielectric materials, such as polyester, polypropylene, Teflon, and others. The dielectric materials used impact the characteristics of the capacitor and affect things such as the dielectric constant, dissipation factor, and temperature stabiliy.

BFC247945104 film capacitors are made of polypropylene film and offer a high dielectric constant and a low dissipation factor. This is a vertical structure, and the pins are directly welded to the top and bottom of the capacitor. When the voltage is applied to the capacitor, a dielectric polarization occurs in the film, resulting in a charge accumulating at both ends of the film. When the charge reaches a certain level, its stored energy will also reach its peak, which is also the peak of the capacitor’s capacitance. The current and voltage of the BFC247945104 film capacitor are also inversely proportional. The lower the current, the higher the voltage and vice versa. The higher the current, the smaller the capacitor’s capacitance.

2. Application Fields of BFC247945104 Film Capacitors

The characteristics of BFC247945104 film capacitors make it suitable for various applications such as signal processing, correction circuits, interference suppression, and general power circuits. It is mainly used as a power filter in switching power supplies. By using this filter, the voltage peaks of the half-wave rectification can be suppressed, and the high-frequency noise generated by the switching power supply can be filtered out. Additionally, it can also be used to suppress interferences from the power grid. The differential capacitor of the BFC247945104 film capacitor helps to filter out the high frequency of the pulse noise caused by the switching of the rectifier.

Belowing are some other application fields:

• Power supplies
• Computer peripheral components
• Switching power supplies
• AC/DC inverters
• DC converters
• Voltage stabilizers
• DC-DC converters
• Civil lighting/industrial illuminations
• Telecom 1C communication equipment

The BFC247945104 film capacitor also has excellent temperature stability. This ensures that the capacitance of the capacitor is relatively stable even under extreme temperature changes. It is also able to handle large pulse currents and is also available in multiple capacitance values. The BFC247945104 film capacitor can handle a working voltage of 85V and a rated voltage of 110V. This makes it suitable for high voltage applications as well.