MKP385620025JPP2T0

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Introduction to Film Capacitors

Film capacitors are non-polarized capacitors, manufactured with a thin plastic film such as polyethylene terephthalate (PET) as the dielectric material, with metalized electrodes on each surface. They are also sometimes referred to as polyester capacitors or plastic dielectric film capacitors. The dielectric film can be either an insulating dielectric material (for non-polarized capacitors) or a semi-conductive material (for polarized capacitors).

Film capacitors are typically small, less prone to microphony, lighter weight, and better suited for high power applications, and of course significantly cheaper than numerous other capacitor varieties. As such, they are popular applications for amplifier coupling, decoupling, and AC line filtering. Due to their high dielectric constant, they are also quite useful in many capacitance-network based circuits.

Advantages of Film Capacitors

The advantages of using film capacitors are numerous. The major benefits of using film capacitors include:

• Excellent stability
• Low ESR
• High insulation resistance
• Good thermal conductivity
• Low parasitic capacitance
• Wide temperature and electrical performance range

Due to these advantages, film capacitors are most frequently used for signal and power decoupling, DC blocking, AC line filtering and coupling, snubbing, and a variety of other essential switching applications.

MKP385620025JPP2T0 and Its Application Fields and Working Principles

Among the various film capacitor models, MKP385620025JPP2T0 is one of the most commonly used. This capacitor sports a one-piece winding configuration, which allows for very tight tolerances of the electrical parameters of the capacitor. It is available in a single-layer or dual-layer configuration and uses a non-solid or solid electrolyte system as the dielectric material.

The MKP385620025JPP2T0 is mainly used in power supply applications for DC-transient suppression, AC line filtering, and power source decoupling and coupling. It can also be used in the filtering of electronic audio circuits for a wide range of frequencies.

The working principle of this type of capacitor is relatively simple. When a DC voltage source is connected, the capacitor will start to charge up, creating a pool of excess electrons in the dielectric material. When an AC waveform is applied to the capacitor, the excess electrons will begin to oscillate and, in turn, generate a current flow on the secondary side of the capacitor. This current flow will help to regulate the voltage waveform, providing a smoother voltage output with less distortion.

Summary

Film capacitors are one of the most popular capacitor types used today, due largely to their low cost, reliability, and wide range of applications. The MKP385620025JPP2T0 is one such film capacitor used for DC-transient suppression, AC line filtering, and power source decoupling and coupling applications. It utilizes a one-piece winding configuration for tight tolerance values, allowing for more precise control over the electrical parameters. The working principle of the capacitor is fairly simple and involves the generation of a current flow on the secondary side of the capacitor in order to regulate the voltage waveform for a smoother voltage output.

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