B41858D5278M

Polarization:	Polar
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.319" (33.50mm)
Size / Dimension:	0.630" Dia (16.00mm)
Lead Spacing:	0.295" (7.50mm)
Impedance:	22 mOhms
Ripple Current @ High Frequency:	3.122A @ 100kHz
Applications:	Automotive
Ratings:	--
Series:	B41858
Operating Temperature:	-55°C ~ 105°C
Lifetime @ Temp.:	5000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	24 mOhm @ 10kHz
Voltage - Rated:	25V
Tolerance:	±20%
Capacitance:	2700µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors – B41858D5278M Application Field and Working Principle

Aluminum electrolytic capacitors, also known as aluminum electrolytics or electrochemical capacitors, are a type of electrolytic capacitor that uses an aluminum foil enclosed in a cone and concentric winding as two electrodes, and electrochemically deposited aluminum oxide film as the dielectric material. This electrochemical capacitor type is particularly suited for high-frequency applications, or as a cost-effective solution for other applications.The B41858D5278M product type belongs to Nippon Chemi-Con\'s KME aluminum electrolytic capacitor line, and is a pillar type device designed for common-mode applications in industrial equipment. The product is designed for long-term reliability and has a lifetime of up to 5000 hours at 85°C, with other environmental conditions specified in the technical datasheet.The design of an aluminum electrolytic capacitor starts with the production of an aluminum foil. A desired level of purity is achieved by using electrolytic refining techniques, resulting in an aluminum foil with a certain grade of conductivity. The aluminum electrode also contains an electrolyte, which provides the ions required for the electrochemical reaction. This can include either gel or liquid electrolytes, depending on the product.The second electrode is a combination of thin layers of a porous carbon circumferential material and a solid resin dielectric, which acts as a separator between the aluminum electrode and a conductive conductive carbon collector layer. Both materials are held together using a special adhesive. The whole structure is then wrapped in a metal housing, typically aluminium or brass.The final components of an aluminum electrolytic capacitor are the terminals, which provide a means of connecting the capacitor to a circuit. The terminals may be solder pins, solder lugs, screw terminals, or wire leads.When a voltage is applied on the aluminum electrolytic capacitor, the Aluminum oxide film, electrolyte, and collector form an ionic layer, which serves as a bridge across the capacitor. This bridge ensures electrical continuity between the aluminum foil electrode and the remaining electrode components. Electrons enter the aluminum, which has a higher propensity for acceptor electrons, through transfer diffusion of the electrolyte ions. When the aluminum gains electrons, an electrochemical reaction takes place that causes the formation of the oxide film. The oxide film created has a very high electrical resistance, resulting in a high capacitance, which is why aluminum electrolytic capacitors are so widely used in power circuits and other applications.The B41858D5278M is an industry-standard aluminum electrolytic capacitor suitable for many types of applications. Its size makes it ideal for applications where space is limited and its cost-effective construction makes it suitable for a variety of applications, including power supply capacitors, EMI filtering, typewriter printhead replacements, and more. Its high voltage and long life make it an excellent choice for many projects, both big and small.

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