WBR250-25A

Polarization:	Polar
Package / Case:	Axial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	--
Size / Dimension:	0.400" Dia x 1.000" L (10.16mm x 25.40mm)
Lead Spacing:	--
Ripple Current @ High Frequency:	178.25mA @ 100kHz
Ripple Current @ Low Frequency:	155mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	WBR
Operating Temperature:	-40°C ~ 85°C
Lifetime @ Temp.:	2000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	1.8 Ohm @ 120Hz
Voltage - Rated:	25V
Tolerance:	-10%, +150%
Capacitance:	250µF
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 an important subset of capacitors, and are among the most popular and widely used in electronics and electrical devices. These capacitors use an aluminum oxide layer deposited on an aluminum foil to achieve their high capacitance and voltage ratings. The combination of their robust construction and performance makes them suitable for a wide variety of applications. One of the most popular and widely used aluminum electrolytic capacitors is the WBR250-25A. This article will discuss the application field and working principle of the WBR250-25A.The WBR250-25A is an aluminum electrolytic radial-lead capacitor with a nominal capacitance rating of 25μF at 20V. It is an ideal choice for filtering and bypassing applications in circuits and systems which demand a large capacitance, high voltage rating and stable performance. It is suitable for decoupling and power supplies, as well as smoothing and ripple control applications. In addition, due to its robust components and construction, it can be used in a variety of harsh or extreme environments. The WBR250-25A features an aluminum cylindrical case and radial leads. The aluminum case ensures the capacitor has maximum mounting space and cooling efficiency, and is filled with an electrolyte composed of a special formulation of organic solvent and electrolyte. The electrolyte is used to form a solid electrolyte which provides a direct connection between the positive and negative metallic ends of the capacitor elements. The capacitor elements are formed by depositing a thin-film layer of aluminum oxide on an aluminum foil and pressing it between two electrodes, separated by a dielectric layer. The metal ends of the electrodes are then connected to the external leads of the capacitor and the oxide layer is electrically activated by the electrolyte. The dielectric layer, or oxide film, provides a non-conductive dielectric barrier between the two electrodes, and it is this dielectric layer which allows the capacitor to store its charge and act as a circuit element. The WBR250-25A also features a high impedance to current, meaning that it will reduce the current crossing its terminals, as well as a high stability over temperature variations. Its robust features and wide temperature range of -10 to +105°C mean it is suitable for use in a variety of circuits and systems, from AC, DC and high frequency applications to those exposed to high temperature and voltage variations. It is also ideal for use in noise reduction applications as it helps to suppress line and system noise. In summary, the WBR250-25A is an excellent example of an aluminum electrolytic capacitor. Its features and robust construction make it suitable for a wide variety of applications, from filtering medium frequency AC line frequencies to suppressing noise. Its high capacitance, voltage rating and stability over temperature variations make it an ideal choice for a wide variety of filtering, smoothing and ripple control applications in circuits and systems.

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