B32913B5224K

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Film capacitors are a type of capacitor that utilizes a thin plastic film, with one or more conductive coatings, to store electric charges. They offer a variety of advantages over other types of capacitors, including a high capacitance-to-weight ratio, low temperature coefficient, stable frequency response, and a high dielectric strength. The B32913B5224K is an example of such a capacitor. In this article, we explore its application field and working principle.

Application Field

Film capacitors are a popular choice for a variety of applications, particularly those that require high-performance characteristics or where a high temperature coefficient is desirable. Examples of such applications include radio-frequency interference (RFI) and electromagnetic interference (EMI) reduction, signal filtering, energy buffering, power factor correction and AC motor drive applications. The B32913B5224K has been designed to provide optimal performance in these specific applications.

The B32913B5224K capacitor has an extended temperature range of -55°C to +125 °C and a maximum rated voltage of 250 volts. It also features an ESR of 1.7 mΩ, a low leakage current of less than 0.02 μA, and a dielectric loss tangent of less than 0.002. This makes it ideal for applications in which high reliability and stability are required.

Working Principle

Film capacitors are constructed using a dielectric material (typically polyester or polypropylene) that is sandwiched between two metal electrodes. This creates a parallel-plate electrical system in which electric charges of opposite polarity on the two surfaces attract each other like magnets, creating an electric field that stores energy.

Essentially, the electric fields in film capacitors act as an AC filter, allowing only alternating electric current to pass while blocking direct current. This is due to the fact that AC current alternates its direction of flow, while DC current flows in a single direction. This makes film capacitors the ideal choice for applications in which clean, pure AC power is required.

The B32913B5224K is a surface-mount device capacitor that has been designed to perform in demanding EMC and coupling applications. It has a high self-resonance frequency of 1.2GHz and a high pulse-handling capability of up to +400V. This makes it an ideal choice for applications in which accurate control of the power supply and signal filtering are essential.

In summary, the B32913B5224K is a type of film capacitor that has been designed to offer superior performance in high-performance applications. It has an extended temperature range, a high capacitance-to-weight ratio, and a low dielectric loss tangent, making it a reliable and stable option for a variety of applications.

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