MKP1839112632G

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Film Capacitors

Film capacitors, also known as plastic film and metalized film capacitors, are passive electronic components that store electric charge. These capacitors are made from thin dielectric plastic films, which are then metallic coated and are used in a wide range of applications, from filtering and coupling to decoupling and bypassing. The MKP1839112632G is one such film capacitor, and its application field and working principle will be discussed in detail in this article.

Application Field

The MKP1839112632G is used in many applications, including filtering AC signals, coupling and decoupling of AC signals, bypassing, and energy storage. It is particularly useful in high-frequency applications due to its low parasitic inductance and high self-resonant frequency, as well as its high surge ratings. It is a surface-mount component with low equivalent series inductance (ESL) and low equivalent series resistance (ESR), making it effective in noise suppression and AC signal rectification. This makes it suitable for use in communications, audio, computer systems, automotive electronics, lighting, and other applications.

Working Principle

The working principle of the MKP1839112632G is based on the electrical characteristics of plastics. When a plastic film is coated with metal, it can create a layer of dielectric that can store a static electric charge. This material is known as a multilayer ceramic capacitor (MLCC). When connected to a circuit, electric charges accumulate on the two films’ surfaces until the accumulative charges create a potential difference across them; this potential difference is known as an “electrostatic field”. The electrostatic field creates the capacitance of the capacitor; the charges on the films’ surfaces will move in response to the current passing through the circuit, which in turn will cause electrical current to flow through the capacitor.

Capacitance and Lifetime

The MKP1839112632G has a capacitance range of 33-200nF, and is rated for a lifetime of up to 20,000 hours. The lifetime of a capacitor is determined by the accumulation of surface charge and resulting oxidation on the dielectric layer, and is affected by voltage, temperature, and frequency. The MKP1839112632G has a wide permissible temperature range of -55°C to +125°C. These factors make it well suited for high-frequency and high-temperature applications.

Construction and Form Factors

The form factor of the MKP1839112632G is often referred to as “pancake coil” due to its size and shape. This film capacitor is constructed from a thin dielectric plastic film, and is metallic coated and wound into a compact cylindrical shape. This winding process ensures that the MKP1839112632G will have good electrical characteristics, such as low self-inductance, low ESR, high insulation resistance, and high surge ratings. Additionally, its compact design makes it a good choice for space-constrained applications.

Conclusion

The MKP1839112632G is an example of a plastic film and metalized film capacitor. These capacitors are used in a variety of applications, including filtering, AC signal coupling and decoupling, bypassing, and energy storage; its low ESL, ESR, and insulation resistance, as well as its wide temperature range, make it well suited for traditional and high-frequency applications. Its compact form factor allows for use in space-constrained designs, and its high surge ratings make it useful for controlling transients. The MKP1839112632G is, therefore, an all-round capacitor that can be used in a variety of applications.

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