MKP1839347405

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are capacitors which use insulating plastic films as the dielectric material for increased safety, stability, precision, and extended operating life. Common types of film capacitors include polyester film, polypropylene film, polystyrene film, or polyethylene film.

The MKP1839347405 is an example of a film capacitor. It is a polyester film capacitor. It is a high temperature, low impedance, and extremely stable capacitor made from self-healing polyester-based films. It is designed for use in digital power supplies, LED lighting, and various other power applications. It has a very low ESR and ESL over time, making it ideal for use in high frequency switching applications.

Film capacitors are well-suited for applications that require high capacitance and stability, such as filtering components in power supplies. They are also used in high-frequency circuits, as well as for filtering, snubber, and decoupling applications. Since film capacitors have a high voltage rating and low thermal stability, they are well-suited for applications that require high reliability and low power loss.

The working principle of the MKP1839347405 film capacitor is similar to that of other film capacitors. The two electrodes of the capacitor are separated by a dielectric material, which is typically a plastic film. When a voltage is applied across the electrodes, an electric field is created and charges the dielectric material. This charge is proportional to the applied voltage and the area of the electrodes, resulting in capacitance.

When the applied voltage changes, the charged dielectric material is instantaneously re-polarized, causing a momentary current flow - this is known as the "polarization current". This current in combination with the applied voltage is what determines the magnitude of the capacitance. As such, film capacitors tend to have a relatively stable capacitance over a wide range of frequencies and temperatures.

In conclusion, the MKP1839347405 film capacitor is a polyester film capacitor designed for high temperature, low impedance, and extremely stable applications such as digital power supplies, LED lighting, and various other power applications. It is well-suited for applications that require high capacitance and stability such as filtering, snubber, and decoupling applications, and has a low ESR and ESL over time. The working principle is similar to that of other film capacitors - the two electrodes of the capacitor are separated by a dielectric material, and when a voltage is applied across the electrodes, an electric field is created and charges the dielectric material, resulting in a stable capacitance.

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