R79PC1100AA40J

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Introduction

Film capacitors, also known as film dielectric capacitors, are a type of capacitor that uses a thin plastic film as the dielectric material instead of the typical ceramic, ceramic-metal, or electrolyted-paper types. The most commonly used film for this type of capacitor is polyester, also known as Mylar, but other materials such as polycarbonate, polypropylene, and polystyrene can also be used. Of these materials, polystyrene is the most stable, while polyester and polypropylene are the most cost-effective. The R79PC1100AA40J model of film capacitor is one of the most popular film capacitors available and can be applied in a variety of applications.

Construction And Housing

The R79PC1100AA40J is a very compact capacitor with a cylindrical shape and a length of 11.5mm. The terminations on the ends of the capacitor feature tubular ends with a diameter of 5mm, which makes them easier to install and increases their reliability. The housing of the R79PC1100AA40J is made from epoxy resin, which is a highly durable thermoplastic that is highly resistant to shock and vibration. The enclosure also features an epoxy-coated ring that provides the capacitor with high levels of protection against moisture, dust, and other environmental factors.

Features

The R79PC1100AA40J model of film capacitor has a rated voltage of 400V and a capacitance of 1200pF. It is also UL listed and CSA approved, which means that it meets all applicable safety standards. The capacitor also has a very low ESR of 6.2mΩ, which is one of the advantages of using film-dielectrics instead of other types. This low ESR rating helps ensure that the capacitor is reliable and performs optimally even under harsh electrical environments or high temperatures.

Application Field and Working Principle

The R79PC1100AA40J model of film capacitor is suitable for a wide range of applications, such as power supplies, inverters, DC/DC converters, and motor drives. In power supplies, the capacitor can be used to reduce the ripple noise that is generated due to the switching of power supplies. In inverters, it can be used to reduce the fluctuations in voltage and current. In DC/DC converters, the capacitor can be used to increase the efficiency of the converter and reduce power losses. In motor drives, the capacitor can be used to reduce the switching noise and ensure smoother operation.

At its most basic, a capacitor is a device that stores energy by using two conductive plates separated by a layer of dielectric material. A charge applied to one of the plates will cause a proportional charge to be stored on the other plate; this is known as "capacitance". The amount of charge which can be stored is a function of the capacitance, the applied voltage and the thickness of the dielectric material. The R79PC1100AA40J capacitor operates on this same principle, but with a thin sheet of plastic film as its dielectric, instead of a ceramic or electrolyte layer. The plastic film, usually made of polyester, allows for a more reliable performance and a higher capacitance rating than typical ceramic capacitors.

Conclusion

The R79PC1100AA40J capacitor is a highly reliable and cost-effective film capacitor that is suitable for a variety of applications. It features a high capacitance rating, a low ESR, and is UL listed and CSA approved. The housing of the capacitor is made from epoxy resin, which provides it with a high level of protection against environmental factors. The R79PC1100AA40J capacitor is suitable for use in power supplies, inverters, DC/DC converters, and motor drives, and is capable of storing charge across its two conductive plates in accordance with its capacitance rating and the amount of voltage applied.

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