BFC2370EI124

Film Capacitors

Capacitors are indispensable components in electronics engineering. Among the many types of capacitors, film capacitors stand out from their counterparts due to their long-term stability, low leakage, and high dielectric strength. Some of the most commonly used film capacitors are the BFC2370EI124 series.

The BFC2370EI124 series is composed of two sets of capacitor elements, each with different rated voltage or maximum operating voltage. These include 630VAC and 440VAC both rated at 0.22μF.

Application field

The BFC2370EI124 series is typically used in electrical and electronic equipment such as video equipment, energy meters, medical devices, and communications relays. Its application field covers high-frequency AC circuits, DC circuits, and AC-DC circuits.

Working principle

Film capacitors exploit the dielectric effect to store electric charges. A dielectric material is sandwiched between two metal plates creating a three-layer structure. When an electric charge is applied to the terminals of the capacitor, the voltage across the structure causes electrons to move from the negative terminal to the positive terminal. This flow of electrons stores energy in the capacitor.

The BFC2370EI124 series is composed of metallized polypropylene film as the dielectric material and aluminum foil as the electrodes. When an AC voltage is applied to these capacitors, the alternating electric field across the metallized film causes electron migration, resulting in an alternating current that is out of phase with the input voltage. This phase difference acts as a filter, blocking high-frequency signals while allowing low-frequency signals to pass.