MKP385322100JC02R0

Film Capacitors

Film capacitors, also known as plastic film capacitors or film dielectric capacitors, are a type of capacitor that use a plastic film as a dielectric. They are sometimes referred to as Polyester (PET) capacitors, Polypropylene (PP) capacitors, Polystyrene (PS) capacitors, Polycarbonate (PC) capacitors, or Metalized Film capacitors. A film capacitor can be very thin and flexible, with a maximum thickness of between 0.1mm and 0.3mm. They are usually used as decoupling or snubber capacitors in power electronic circuits.

MKP385322100JC02R0 is a film capacitor manufactured by Coilcraft, Inc. It is constructed using a polypropylene (PP) dielectric and a metalized electrode film. It is designed for AC and Pulse applications and is widely used in DC/DC converters, lighting, and high-speed switching power supplies.

Application Fields

MKP385322100JC02R0 is suitable for use in various power supply circuits, especially where high pulse and surge voltages are involved. It is also useful for power conditioning and regulation applications, such as over-voltage and surge protection circuits. It has a very low ESR (equivalent series resistance) that allows it to handle high inrush currents and reject unwanted noise.

Working Principle

A film capacitor works by trapping electrons between two conducting materials, one of which consists of a dielectric material. When a voltage is applied to the capacitor, electrons from the negative terminal of the voltage source are attracted to the positive terminal of the capacitor. This creates a layer of electric charge on the surface of the dielectric material. The electrons held by the capacitor form an electric field between the electrodes, and this is what stores energy in the capacitor. When the voltage is turned off, the electric field dissipates, and the charge stored in the capacitor is released.

Conclusion

MKP385322100JC02R0 is a polypropylene (PP) film capacitor suitable for use in power supply circuits, particularly in applications involving high surge voltages. Its low ESR allows it to handle high inrush currents and reject unwanted noise. It works by trapping electrons between two conducting materials, one of which consists of a dielectric material, creating an electric field between the electrodes which stores energy in the capacitor.