MKP385462125JKP2T0

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are small yet essential components used in a wide range of electronic circuits. These solid capacitors are commonly found in consumer electronics, power supplies and deflection circuits in CRT based televisions, but their applications stretch far beyond these areas. The MKP385462125JKP2T0 is one example of a widely used film capacitor, and this article will explain its key application fields and the working principles of film capacitors.

Types of Film Capacitors

There are two main types of film capacitors: polypropylene (PP) capacitors and polyester (PET) capacitors. PP film capacitors have superior electrical properties such as low dissipation factor and large insulation resistance, making them ideal for high frequency and low-impedance applications. By contrast, polyester film capacitors are well-suited for low-frequency operations where high capacitance and low cost are the primary priorities.

The MKP385462125JKP2T0 is a PP film capacitor, with a rated voltage of 440VAC, a capacitance of 4700µF and a temperature coefficient of -2550ppm/MO. This robust component is also resistant to humidity, making it a durable and reliable choice for many electronic circuits.

Application Fields

Film capacitors are commonly used to reduce noise and ripple in audio circuits, especially in power amplifiers. They are also commonly used in lighting systems to provide power factor correction, and in the motor driver circuits of electric vehicles. The MKP385462125JKP2T0 is widely used for motor drive control in electric vehicles due to its durability in the most harsh conditions.

Other common applications for film capacitors include power supply filters, high frequency coupling and decoupling in communication systems, AC motor control, filtering of measurement systems, pulse power supplies and energy recovery systems. The MKP385462125JKP2T0 is a versatile and reliable choice for a broad range of these applications.

Working Principle

Like any other type of capacitor, film capacitors work by storing electric charge. However, they do not contain electrolytes like other types of capacitors such as electrolytic capacitors, but instead a dielectric material. This dielectric material is usually a film made of polypropylene, polyester or polycarbonate. When a voltage is applied to the terminals, an electric field is created across the dielectric material, polarizing it and allowing it to store energy.

The amount of electric charge stored in a film capacitor is determined by the size and configuration of the dielectric, as well as the temperature and the applied voltage. The MKP385462125JKP2T0 can store up to 4700µF of electric charge, making it a great choice for high power applications.

Conclusion

Film capacitors, such as the MKP385462125JKP2T0, are an integral component in a wide variety of electronic circuits, offering reliability and durability even in the harshest conditions. Their working principle is based on storing electric charge in a dielectric material, and they are available in two main types: polypropylene and polyester. They are primarily used to reduce noise and ripple in audio circuits, motor drive control in electric vehicles, power supply filters, pulse power supplies and more.

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