C4GADUB4100AA4J

ESR (Equivalent Series Resistance):	6.7 mOhms
Features:	--
Ratings:	--
Applications:	DC Link, DC Filtering; High Frequency, Switching; Snubber
Lead Spacing:	--
Termination:	PC Pins
Height - Seated (Max):	--
Size / Dimension:	0.433" Dia x 0.807" L (11.00mm x 20.50mm)
Package / Case:	Axial
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C
Series:	C4G
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	250V
Voltage Rating - AC:	160V
Tolerance:	±5%
Capacitance:	1µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are modern, long-lasting, relatively low-voltage capacitor types typically used to help control AC line voltage, and to smooth and filter DC power supplies. While they are one of the most popular capacitors on the market as of late, film capacitors also marked a substantial improvement when compared to their counterparts in terms of their stability, the fulfillment of environmental requirements, and the reliability of their insulation.

C4GADUB4100AA4J application field and working principle

The C4GADUB4100AA4J is a part of the GADU series of plastic film capacitors from KEMET Electronics Corporation. The dielectric used is polypropylene, a polyester based plastic film, which allows this capacitor to be used as a part of a wide range of AC Line Filters and Power Supply applications in the frequency range up to 50kHz. Generally, because of their wide range of dimensions and the ability to withstand higher temperatures, plastic film capacitors are mainly used in the automotive, industrial, and consumer electronics markets. The C4GADUB4100AA4J is designed for application in EMI/ RFI applications such as AC power line filters in the 200VAC - 250VAC application. It is used to attenuate conducted interference in the frequency range up to 50kHz in equipment. Plastic film capacitors, unlike other types of capacitors, have very low electrical losses that make them ideal for RFI applications. In basic terms, a capacitor works by holding an electric charge between two conducting surfaces. Film capacitors, like any other type of capacitor, store electric charge due to the presence of an electric field between two dielectric plates. In the case of the C4GADUB4100AA4J, the dielectric plates are two layers of polypropylene films, with a thin layer of metallized material in between. The working principle is actually quite simple. When a potential difference is applied across the plates, electrons are redistributed, and a charge (Q) is stored. Charge is determined by the area of the plates, the distance between them (the thickness of the dielectric material) and the dielectric constant of the film. As the plates are observed to accumulate the electric charge, the capacitor also accumulates Electrical Energy proportional to Q2. The total energy stored is then calculated by multiplying the capacitance with the square of the voltage applied to it. When the alternating current passes through capacitors they act as a very effective low- pass filter by permitting the passage of low-frequency signals and attenuating or blocking the higher-frequency components. This is achieved by taking advantage of capacitance as it is inversely proportional to the frequency of the signal. The higher frequency signals have a lower capacitance, and due to this lower capacitance, these frequencies are more easily blocked or attenuated. The low-frequency signals, on the other hand, have more capacitance and they are allowed to pass through and not be attenuated. In the case of the C4GADUB4100AA4J, the low dissipation factor enables this capacitor to attenuate high-frequency noise, which makes it a reliable choice for many power supply and EMI/RFI applications. The plastic film capacitor is also known for its low equivalent series resistance (ESR) which helps in providing very good filtering capability.

Conclusion

The C4GADUB4100AA4J is a plastic film capacitor typically used in a wide range of AC Line Filters and Power Supply applications in the frequency range up to 50kHz. C4GADU’s low equivalent series resistance, high temperature endurance and excellent dielectric properties make it suitable for EMI/RFI applications. It also has low electrical losses, making it an ideal capacitor for power supply applications. The C4GADUB4100AA4J has a wide range of dimensions and is capable of withstanding high temperatures allowing it to be used in the automotive, industrial, and consumer electronics markets.

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