BFC237139105

Film Capacitors

Film capacitors utilize plastic films as the insulating material between the two plates. These films can be either polyester or polypropylene films. The metal electrodes are then coated onto the two sides of the film. The dielectric constant produced by these plastics films is much higher in comparison to the dielectric constants of paper or ceramic type capacitors.

BFC237139105 is a film capacitor that is manufactured using polyester film as the dielectric. It has a capacitance of 4.7uF and a working voltage of 450VDC. BFC237139105 is an automotive grade device, suitable for use in applications where temperature, mechanical, and electrical stability are important.

Application Field

The BFC237139105 is a multipurpose part, which can be utilized in a wide variety of applications. It is often used in decoupling, filtering, and timing based circuits. The device is also used for smoothing applications, which require high ripple current and low ESR. Additionally, the BFC237139105 can be employed in radio circuit applications such as intermediate frequency amplifiers, resonance circuits, and audio amplifiers.

The BFC237139105 is often used in automotive applications, where high ripple current and high temperature performance are required. It is suitable for use in fuel pump systems, starter motors, solenoid drivers, wiper motors, and airbag systems. This unit is also used in impedance matching applications in voltage regulator or power supply circuits.

Working Principle

Just like other capacitors, the basic principle of working for the BFC237139105 is to store electrical energy and then release it when required. The electrical energy is stored in an electrical field, which is produced between the two metal electrodes of the capacitor. This field is produced due to the difference in electrical potentials between the two electrodes. The dielectric material between the electrodes holds the energy until it is required.

The current that flows through the capacitor is called the capacitive current. This current is controlled by the capacitor’s capacitance value, which is determined by the area of the capacitive plates and the dielectric material between them. When the voltage across the capacitor is high, the current through it is high. As the voltage across the capacitor decreases, so does the current.

The BFC237139105 is designed to have a stable capacitance value, even when subjected to varying temperatures. This ensures that the capacitance remains constant in all operating conditions.