MKT1820322255

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Film capacitors, also called plastic film capacitors, are largely made of polypropylene films that are held together by aluminum electrodes. These capacitors are mainly employed in power electronics, telecommunications, and consumer electronics applications. Depending on the application, they are divided into three classes: Motor Run, DC Link and AC Applications. The MKT1820322255 is a polypropylene (PP) film capacitor designed to be used in DC and AC applications.

The MKT1820322255 exhibits good self-healing properties and low acoustic noise. This capacitor is able to withstand surge voltages of up to 1800V. It offers high insulation resistance value (up to 10,000 GW) and low partial discharges (PD). As a result, it is suitable for high-power long-life circuits. Moreover, it features a wide range of capacitances and rated voltages. These range from 1μF to 470μF at 300V AC or 400V DC.

The MKT1820322255 is applicable in various applications and can be used for both AC and DC applications. It has a high ripple current capability, enabling it to maintain a high capacitance value even in cases where there is significant ripple current. This high ripple current capacity is often necessary in power factor correction (PFC), inverters, and switching power supplies. It is also highly suitable for use in lighting ballast and ignition systems connected to automotive engines. The capacitor is also compatible for use in high-precision electronic devices such as optical receivers, integrated radio frequency (RF) receivers, digital signal processing (DSP) modules, precision converters, and other instruments.

The MKT1820322255 exhibits excellent heat resistance and can operate at a temperature range of -55℃ to +125℃ across a wide range of environmental conditions. Thanks to its exceptional dielectric strength, it is an ideal component for applications that require high dielectric reliability and endurance in high-paced power electronica, automotive, and computer applications. Its dielectric strength helps to prevent breakdowns, thereby ensuring better performance and long service life.

The working principle of the MKT1820322255 is based on the physical fact that dielectrics reduce the flow of electric current. Dielectrics possess a property known as electric permittivity, which is the capability to store electric charge. It works in an environment surrounded by two electrodes, i.e., a positive and a negative. The dielectric material is placed between the two electrodes and an AC voltage is applied. The capacitor then stores the energy in the form of an electric field. When the voltage is maintained, the electric charge stored in the electric field slowly flows into the capacitor terminal, reducing the total stored charge in the capacitor. This phenomenon is referred to as capacitance.

In conclusion, the MKT1820322255 is a motor run film capacitor designed for use in DC and AC applications including Power Factor Correction (PFC), inverters, lighting ballasts, and ignition systems. It has a wide range of capacitances and rated voltages, ranging from 1μF to 470μF and 300V AC or 400V DC, respectively. Its performance is further enhanced by its dielectric strength, which prevents breakdowns and ensures better performance and longer service life.

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