BFC238621684

Film Capacitors

A film capacitor, or film dielectric capacitor, is a capacitor that uses a film of plastic as the dielectric. It is a passive electronic component with a wide range of capabilities. Film capacitors can be used in a variety of applications, from AC line filtering to dc-dc converters and from data input protection to RFI suppression. Film capacitors have the advantage of providing low cost and high performance. The model BFC238621684 is one such film capacitor.

BFC238621684 Application Field

The BFC238621684 film capacitor has a permissible operating temperature range from -40°C to 105°C. It is a surface mounted 1812 capacitor with ESR of 0.0018 Ohms, rated voltage of 48V, and capacitance of 4.7uF. It has excellent DC characteristics, stable temperature, high ripple current capability, and low ESR. It is designed for high-frequency power electronic circuits, including dc-dc switching power supplies, switching generation and polarization control circuits, and filter circuits dealing with power modulation and digital photoelectric conversions.

BFC238621684 Working Principle

The BFC238621684 is a film capacitor with a metalized Mylar construction. The film layers are constructed with alternating layers of polyester film and metal foil, with an adhesive material between them, creating the capacitor body. The film layers are wound in a rolled configuration and then inserted into the box-shaped end caps where electrical contact is made to create the capacitor. One end cap acts as the anode, and the other acts as the cathode.

The film dielectric capacitor works on the same basic principle as all dielectric capacitors. When a voltage is applied across the capacitor, it creates an electric field between the terminals. This electric field creates a force on the free electrons in the dielectric material, which further create a manifold of opposing charges that produces an opposing electric field and opposes the applied voltage. As a result, electric energy is stored in the capacitor.

Conclusion

The BFC238621684 film capacitor is a high performance, low-cost capacitive device with a wide range of capabilities. Its wide range of features makes it suitable for many applications, including high-frequency power electronic circuits, dc-dc switching power supplies, switching generation and polarization control circuits, and filter circuits dealing with power modulation and digital photoelectric conversions. The working principle of the BFC238621684 is based on the same principles as all other dielectric capacitor, in which an electric field created by the applied voltage stores electric energy in the capacitor.