C4AEJBU4400A1XJ

ESR (Equivalent Series Resistance):	12.9 mOhms
Features:	--
Ratings:	--
Applications:	DC Link, DC Filtering; High Frequency, Switching
Lead Spacing:	1.083" (27.50mm)
Termination:	PC Pins
Height - Seated (Max):	0.992" (25.20mm)
Size / Dimension:	1.240" L x 0.512" W (31.50mm x 13.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C
Series:	C4AE
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	700V
Voltage Rating - AC:	--
Tolerance:	±5%
Capacitance:	4µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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C4AEJBU4400A1XJ application field and working principle

Film Capacitors are one of the most commonly used components in the electronics industry. With their small size, high efficiency, robust construction and low cost, they are often the first choice for applications such as power supplies, protection circuits and noise filters. The C4AEJBU4400A1XJ film capacitor is an especially popular single-layer metallized polyester film type capacitor, which has extended characteristics covering a wide range of applications with its low impedance and low ESR characteristics. C4AEJBU4400A1XJ is a Class X2 safety certified, standard tolerance (±20%) capacitor designed to operate between temperature ranges of -55°C to + 125°C.

Applications of C4AEJBU4400A1XJ

C4AEJBU4400A1XJ film capacitors are mainly used in low and medium voltage DC circuits, especially in electronic equipment where long-term electrical stability is important. The wide temperature range also allows the C4AEJBU4400A1XJ film capacitor to be used in applications such as high-power DC/DC converters, high-frequency switching power supplies, and PFCs. These capacitors are also well-suited for applications such as RF decoupling circuits and high-frequency antenna matching in the industrial and consumer markets, where their high capacitance stability is a determining factor.C4AEJBU4400A1XJ film capacitors also show excellent performance when used in switching circuits and transients, where noise attenuation, damping and filtering are needed. In this context, the low ESR helps to keep input and output voltages stable and offset the ripple current.Another application in which C4AEJBU4400A1XJ capacitors excel is signal filtering, where their low capacitance values, high ripple current ratings, and low floor noise make them the perfect choice.

Working Principle of C4AEJBU4400A1XJ

C4AEJBU4400A1XJ film capacitors use a polyester or polypropylene dielectric that is wrapped in a metalized sheet. The sheet is then folded and interleaved with the dielectric, forming a set of two or more electrodes. In operation, the applied voltage overcomes the dielectric strength of the material and a current will flow between the electrodes. The applied voltage will cause electrons to be discharged at one of the electrode surfaces, and will induce a current flow between the electrodes. The charge on either the positive or negative electrode will be attracted to the oppositely charged electrode, thus forming an electric field.The electric field ensures that the charge stored in the capacitor is preserved throughout its operating range. The dielectric of the capacitor is designed to maintain a separation between the electrodes, thus reducing leakage current and using the space to retain more charge. The plate area and dielectric thickness also play a role in determining the capacitance of the capacitor.

Conclusion

C4AEJBU4400A1XJ film capacitors are important components in a variety of applications, due to their low impedance, high ESR, high capacitance stability, and wide temperature range. Applications include high-power DC/DC converters, RF decoupling circuits, antenna matching, switching circuits, power factor correction and noise filtering. The working principle of the C4AEJBU4400A1XJ film capacitor is based on the use of a metalized sheet wrapped around a polyester or polypropylene dielectric, which creates an electric field that is capable of storing energy in the form of charge on the electrodes.

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