930C4S68K-F

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Film Capacitors

Film capacitors are the most commonly used capacitors, and impart a variety of useful properties to circuits including frequency response, noise filtering, stability and more. This article will discuss the application field and working principle of one particular type of film capacitor, the 930C4S68K-F.

Types of Film Capacitors

Film capacitors come in a variety of different configurations, depending on the type and quantity of material used in their construction. The generally accepted types of capacitor constructions are non-polarized, DC-biased and AC-biased. Examples of non-polarized capacitors include polypropylene, polyester, polystyrene, polycarbonates and other plastic film capacitors. These capacitors are limited in the amount of voltage they can withstand, as well as the amount of current they can handle. DC-biased capacitors include polypropylene, polyphenylene sulfide and polyphenylene oxide capacitors. AC-biased capacitors include electrolytic, metalized polyester, polypropylene and polystyrene. Of these types of film capacitors, the 930C4S68K-F falls into the polypropylene capacitor category.

Structure and Specifications

The 930C4S68K-F is a polypropylene capacitor with a physical structure of three layers. The outer layers are composed of a polypropylene film and the middle layer is made of an aluminum foil electrolyte. The capacitor has an insulation resistance value of 100 megohms and a capacitance of 68 microfarads (μF) with a tolerance of plus or minus 10%. This capacitor also has a maximum temperature rating of 105°C and a rated voltage of 400 volts (V). And it has a working voltage of 250V.

Application Field of 930C4S68K-F

The 930C4S68K-F is an ideal capacitor for both AC and DC applications. It provides reliable performance and stable capacitance in the frequency range of 0.25 Hz to 300kHz. This makes it suitable for applications such as power conversion, power supply units, signal conditioning, and pulse control. It is also suitable for use in HVAC systems, lighting systems, audio equipment, telecommunications, and other low-voltage and high-frequency applications.

Working Principle of 930C4S68K-F

The 930C4S68K-F works by forming a capacitor plate between two conductive layers. With voltage applied, an electric field is created which attracts and absorbs charge from one layer to the other. This charge is constantly moving and is known as an electric current. The electric charges create an electrostatic field between the two layers, and a capacitance is established when this electric field is used to store electrical energy.

The metalized polypropylene construction of the 930C4S68K-F has been designed to withstand large current surges and be able to self-heal in the event of a breakdown, allowing the capacitor to recover quickly. This internal self-healing method helps to ensure the long-term operation of the capacitor.

Conclusion

The 930C4S68K-F is a useful capacitor for a variety of applications due to its low-frequency and high-voltage performance. Its metalized polypropylene construction provides for excellent self-healing capabilities and reliable performance. With its wide range of applications from power conversion to HVAC, the 930C4S68K-F is a popular choice for those looking for reliable and long-lasting capacitors.

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