400BXW82MEFR18X25

Polarization:	Polar
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.063" (27.00mm)
Size / Dimension:	0.709" Dia (18.00mm)
Lead Spacing:	0.295" (7.50mm)
Ripple Current @ High Frequency:	1.6A @ 100kHz
Ripple Current @ Low Frequency:	640mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	BXW
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	12000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	400V
Tolerance:	±20%
Capacitance:	82µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are widely used in electronic circuits for many different purposes. Typically, these capacitors are used for filtering, bypassing, coupling, decoupling, pulse shaping, and power supply storing. 400BXW82MEFR18X25, in particular, is an aluminum electrolytic capacitor with a radial leaded design, a tape and reel package, and a large capacity rating. Understanding its application field and working principle is essential in using this product efficiently.

Application Field

The 400BXW82MEFR18X25 capacitor is most suitable for applications with high-frequency pulse currents, DC blocking, and voltage smoothing. It is especially ideal for filter and bypass circuits as its high-frequency impedance is low even at high frequencies. As a result, it is widely used in power supplies, high-frequency electrical circuits, display devices, and computers that require power pulsing characteristics.

Working Principle

The 400BXW82MEFR18X25 aluminum electrolytic capacitor operates on the principle of electrolytic conduction. It is composed of two thin layers of aluminum foil, separated by a thin layer of insulation. The foil layers act as the two plates of the capacitor, while the insulation between them acts as the dielectric. When electric current is applied, the voltage across the capacitor causes ions to migrate through the dielectric. This creates an electrochemical reaction at the surface of the aluminum that produces an electrolyte film that provides additional insulation between the two surfaces. The 400BXW82MEFR18X25 capacitor has a long service life because the electrolytic film is more stable than other dielectrics. This stability provides the capacitor with higher insulation resistance and higher breakdown voltage. In addition, the electrolytic film also provides an effective heat dissipation capacity, increasing its capabilities as a power source.

Conclusion

In conclusion, the 400BXW82MEFR18X25 is an aluminum electrolytic capacitor designed to meet the needs of high-frequency circuits and power supplies. It operates on the principle of electrolytic conduction, providing excellent insulation and stability. The long service life of the capacitor means that it can be used in a variety of applications for extended periods of time, providing reliability and economical operation.

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