C4AF1BW5220A3OK

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Film Capacitors

Film capacitors are electrical capacitors formed by layering a thin insulating film such as polyester, polypropylene, polyethylene, polycarbonate or polystyrene onto a conductive surface. The conductive surface may be paper, aluminum foil or a combination of paper and aluminum film. When a voltage is applied, a thin electric field is created between the layers of the film capacitor, thus creating the capacitor\'s charge storage element.

The C4AF1BW5220A3OK is an example of a type of film capacitor. It is designed specifically for AC and DC applications, such as frequency bias networks, EMI/RFI filters, and bypass or coupling circuits. The C4AF1BW5220A3OK consists of layers of polypropylene dielectric with aluminum and paper electrodes. It is a miniature, low-profile device with a rated capacitance of 1 nF, and can handle peak temperatures up to 85 degrees Celsius.

Application Field

The C4AF1BW5220A3OK is mainly designed for general purpose applications, such as signal filtering, signal coupling, and bypass function. This capacitor has a high capacitance, wide working voltage range, and low equivalent series resistance (ESR) characteristics. These characteristics make it an ideal choice for use in various applications, such as

• Electromagnetic interference (EMI) or radio-frequency interference (RFI) filters
• Frequency bias networks
• High frequency applications
• DC-link capacitors in power electronic circuits
• Bypass and noise suppression of low- and high-frequency circuits
• Discrimination and decoupling of signal leads

Working Principle

The working principle of any capacitor is the same. When a voltage is applied to a capacitor, an electric field is created between the two conductive surfaces of the capacitor. This electric field creates an electric charge which is stored in the capacitor. The amount of charge stored in a capacitor depends on the capacitance, or the ability of the capacitor to store electric charge.

In the case of the C4AF1BW5220A3OK, two layers of polypropylene dielectric material are used to form a thin film between the two electrodes. The voltage applied to the capacitor creates an electric field between the two thin films, thus creating an electric charge and allowing current to flow. The size and number of layers of the dielectric material determine the capacitance of the device, which in turn determines the amount of charge the device can store.

The C4AF1BW5220A3OK is an ideal choice for use in a variety of applications due to its high capacitance, wide working voltage range, and low ESR characteristics. These characteristics make it well-suited for use in frequency bias networks, EMI/RFI filters, and bypass or coupling circuits.

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