EEU-FC1J391

Series:	FC
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	390µF
Tolerance:	±20%
Voltage - Rated:	63V
ESR (Equivalent Series Resistance):	--
Lifetime @ Temp.:	5000 Hrs @ 105°C
Operating Temperature:	-55°C ~ 105°C
Polarization:	Polar
Ratings:	AEC-Q200
Applications:	Automotive
Ripple Current @ Low Frequency:	1.29A @ 120Hz
Ripple Current @ High Frequency:	1.72A @ 100kHz
Impedance:	70 mOhms
Lead Spacing:	0.197" (5.00mm)
Size / Dimension:	0.492" Dia (12.50mm)
Height - Seated (Max):	0.984" (25.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can

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Aluminum Electrolytic Capacitors: EEU-FC1J391 Application Field and Working Principle

Aluminum electrolytic capacitors are electronic components used in various industries ranging from aerospace and medical to automotive and industrial. These capacitors are widely used due to their unique characteristics — those being high capacitance and low impedance, high current handling ability, low self-discharge, and low cost. The main application of such capacitors is to store energy, act as a filter, and to smooth voltages, while most aluminum electrolytic capacitors have a long service life. One of the most popular types of aluminum electrolytic capacitors is the EEU-FC1J391, which is ideal for a range of applications.

Applications of EEU-FC1J391

The EEU-FC1J391 is a Bi-Polar type aluminum electrolytic capacitor, featuring low impedance, long life and excellent DC characteristics. It is commonly used in energy handling, such as high-frequency power supplies, UPS power, solar power systems, and so on. It is also suitable for use in AC filtering applications, including air conditioners, active speakers, and other high-frequency electronic equipment. Moreover, due to its low impedance and high capacitance, the EEU-FC1J391 is also useful in high quality audio equipment, such as amplifiers and audio/video players.

Working Principle of EEU-FC1J391

The working principle of the EEU-FC1J391 is based on the electrochemical properties of an electrolyte. This electrolyte, combined with an oxygen‐depleted metal anode and porous cathode, is then sealed inside an aluminum housing. By passing a current through the capacitor, the oxygen-depleted metal anode dissolves and migrates to the cathode where it forms an oxide layer. This oxide layer creates the capacitor’s dielectric layer and the capacitor can now store and release electrical energy.The capacitance of this type of capacitor is proportional to the area of the surfaces and the spacing between them, which are determined by the electrolyte’s dielectric constant and the thickness of the oxide layer.

Conclusion

The EEU-FC1J391 aluminum electrolytic capacitor is an ideal choice for many applications, such as AC and DC power supplies, audio video equipment, active speakers, and air conditioners. Thanks to its unique characteristics like high capacitance, low impedance, and high current handling ability, it offers an excellent performance over its entire lifetime. The working principle of the EEU-FC1J391 is based on the electrochemical properties of an electrolyte which creates an oxide layer, forming a dielectric layer that enables energy storage and release.

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