SFA37T2K219B-F

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Film capacitors are electrostatic devices that consist of two electrodes separated by a dielectric material. The material used for the dielectric can either be a dielectric polymer film or a paper film. The SFA37T2K219B-F is a film capacitor specifically designed for use in signal processing and high frequency electronic applications.

Features and Applications

The SFA37T2K219B-F film capacitor has a rated capacitance of 2.19uF and a tolerance of 5%. It has a maximum operating voltage of 25V and a working temperature range of -55°C to +85°C. The SFA37T2K219B-F is RoHS compliant and features a robust construction with excellent electrical insulation properties. It is suitable for applications such as surge protection, signal buffering, and filter systems.

Construction

The SFA37T2K219B-F is constructed from two metalized polypropylene films separated by a dielectric paper film. An insulating support layer is sandwiched between the two electrodes to enhance the capacitance stability and increase the insulation resistance. The capacitors have been designed to provide excellent electrical insulation in even the harshest of environments.

Working Principle

The basic working principle of a film capacitor is that it stores energy in the form of an electrostatic field created between its two metalized electrodes. When a voltage is applied across the electrodes, a charge is stored on the dielectric film by the electrostatic field. This stored charge helps control the flow of electricity through the capacitor and amplifies and filters the signal.

Advantages

Film capacitors offer several advantages over other types of capacitors, such as:

• They are typically smaller than other types of capacitors.
• They are capable of handling higher voltages due to their robust construction.
• They have excellent long-term stability due to their low leakage current.
• They offer excellent frequency distortion and ac line filtering.
• They are resistant to extreme temperatures and humidity.

Conclusion

The SFA37T2K219B-F is a film capacitor designed for use in signal processing and high frequency electronic applications. It offers excellent electrical insulation in even the harshest of conditions and features a rated capacitance of 2.19uF and a tolerance of 5%. It is suitable for applications such as surge protection, signal buffering, and filter systems due to its robust construction and high voltage handling capabilities.

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