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Film Capacitors

Introduction

Film capacitors are quasi-fixed components with small capacitance. They are mainly used for filtering, bypassing, coupling, and decoupling circuits. The general film capacitors are often made of polycarbonate, polystyrene, polyester, polypropylene, and other plastic dielectric films with excellent insulation and dielectric properties. Among them, polypropylene film capacitors are most widely used. The key component in the manufacture of film capacitors is the dielectric film; the surface of aluminum foil and the film after processing form the dielectric layer, and these two layers are electrically connected to the electrode. In addition, the film capacitor has a stable frequency characteristic, good self-healing property, a lightweight and beautiful shape, and a long service life.

947D721K102CHRSN Application Field and Working Principle

The 947D721K102CHRSN film capacitor is a polypropylene film capacitor with a capacitance of 1μF. It is mainly used in the output and input dc ripple filtration circuit, and the bypass circuit of the AC/DC and DC/DC converter. This film capacitor is mainly composed of a dielectric film, electrode foils, wraps, and a terminal which form the anode and cathode in the circuit. When the voltage increases, electrons will move to the anode to form a static electrical field. This static electrical field will cause the dielectric and foil to be polarized, resulting in a dielectric current flow between the anode and cathode. This dielectric current flow is called the capacitance effect, and it is this effect that forms the basis of the film capacitance.

The 947D721K102CHRSN film capacitor has a wide temperature range of -55°C to +105°C and a voltage range of 160V to 1000V. It has a high insulation resistance, a low DF value, and self-healing characteristics. In addition, the 947D721K102CHRSN film capacitor has high accuracy and low contact resistance compared to other film capacitors. These advantages make it suitable for use in high-frequency, switching, power, and communication circuit. In terms of safety performance, the 947D721K102CHRSN film capacitor has many protection measures such as reinforced insulation, high temperature resistance, pressure resistance, and corrosion resistance. This ensures the safe operation of the device in the event of an abnormal current.

Conclusion

The 947D721K102CHRSN film capacitor has many outstanding advantages. Its small capacitance and the ability to withstand high voltages, wide temperature ranges, low DF values, and stable frequency characteristics make it an ideal choice for many video, audio, switching, power, and communication applications. Its dielectric properties are excellent, and its self-healing characteristics ensure long product life. In addition, its light weight, compact size, low contact resistance, and excellent safety performance ensure the safe and reliable operation of the device. Therefore, the 947D721K102CHRSN film capacitor is a reliable, stable, and versatile device.

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