F339MX251031KI02W0

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Film capacitors, also known as plastic film capacitors, are capacitors that use plastic films as the dielectric material. They are widely used in high-frequency circuits, filters and high-performance AC applications. F339MX251031KI02W0 is a typical type of film capacitor, which is constructed by rolling long thin film layers tightly around short, formable aluminum mandrels, and an insulating, terminal bridge pack as shown in Figure 1.

Figure 1: Illustration of F339MX251031KI02W0 film capacitors with insulation, terminal bridge pack.

F339MX251031KI02W0 Application Field

F339MX251031KI02W0’s considered application fields are for DC blocking, filtering, bypassing, coupling, and general AC applications, such as precision filters, power supplies, and instrumentation.

These film capacitors are particularly indicated for use in high frequency long life applications, when the specifications of the application require stable performance over time and temperature. This type of capacitors is also suited for use in very high frequency applications such as clock oscillators and power supplies.

F339MX251031KI02W0 film capacitors are suitable for operation in a wide range of temperatures, from -55°C to 125°C and moderate to high vibration harsh environments, and perfect for applications with great high frequency noise or large voltage swings.

F339MX251031KI02W0 Working Principle

F339MX251031KI02W0 film capacitors are constructed by rolling thin plastic film layers around short, formable aluminum mandrels and an insulating, terminal bridge pack. This process forms a coil of film that is self-supporting, where the terminals are attached in such a way would form an air gap between the plates when the capacitor is formed.

The capacitance is determined by the size of the plates, the spacing between them, and the dielectric constant of the film. The plates can be different sizes, shapes, and materials, such as aluminum, copper, or mica. The dielectric constant of the film can range from 2 to 8, depending on the material and its thickness, which affects the capacitance of the capacitor.

The most common dielectric materials used in construction of F339MX251031KI02W0 film capacitors are polyester, polystyrene, polypropylene, polycarbonate, and Mylar, but more advanced materials such as polyimide, ceramic, and PTFE (TeflonTM) are also available.

Once the terminals are attached, the coil is sealed with a very thin, almost invisible coating of moisture-resistant coating that also protects against condensation and other contaminants. This protective coating is applied in a controlled atmosphere that removes any trace of moisture, making the resulting capacitor very resistant to moisture.

F339MX251031KI02W0 film capacitors also feature an insulating, terminal bridge pack, a structural element that prevents arcing between the plates. The bridge pack also assists in distributing the voltage evenly across the entire assembly, and helps reduce the overall inductance.

The overall combination and material selection of F339MX251031KI02W0\'s construction makes its performance reliable and stable, making it an ideal choice when reliability and performance are required in various applications.

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