861101486029

Series:	WCAP-AIL8
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	820µF
Tolerance:	±20%
Voltage - Rated:	450V
ESR (Equivalent Series Resistance):	--
Lifetime @ Temp.:	2000 Hrs @ 85°C
Operating Temperature:	-25°C ~ 85°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	3.2A @ 120Hz
Ripple Current @ High Frequency:	4.416A @ 100kHz
Lead Spacing:	0.394" (10.00mm)
Size / Dimension:	1.378" Dia (35.00mm)
Height - Seated (Max):	2.559" (65.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can - Snap-In

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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor, simply known as an aluminum capacitor, is an electrical component constructed out of two aluminum foils sandwiching an electrolyte, a solution containing an electrolyte such as yttrium oxide. It is a polarized capacitor, meaning that electricity can only pass through it in one direction. Aluminum electrolytic capacitors have been used in various applications since 1906 and are among the cheapest types of capacitors on the market, making them a popular choice for designers of notably electrical devices.The 861101486029 application field and working principle of aluminum electrolytic capacitors are detailed below.

Application fields

Aluminum electrolytic capacitors can be found in various applications ranging from power supplies and voltage regulators to pulse circuits. One of the most common uses of aluminum electrolytic capacitors is in the filtering of ripple voltages in switched power supplies and AC-DC converters. Ripple is a quickly alternating voltage waveform that causes regular switching between charge and discharge conditions, giving rise to significant losses in efficiency. Aluminum electrolytic capacitors can be used to reduce the level of ripple, and therefore improve the efficiency of the device.Aluminum electrolytic capacitors can also be used to stabilize signal voltages, suppress DC-ripple voltages and reduce inrush current. They are also commonly used for Oscillators and in Trigger circuits.

Working Principle

Aluminum electrolytic capacitors function by utilizing the separation of charge between two aluminum oxide plates, allowing electrons to flow freely between them. The electric current flows through a solid electrolyte, which is usually a yttrium oxide layer made of a polymer film and is sandwiched between the two aluminum foils.The yttrium oxide layer acts as an insulator and prevents electric charge from flowing between the two aluminum foils, preventing the capacitor from short circuiting. The electric current passes into the electrolyte and directly into the aluminum area where the capacitance, or charge, is stored. When a voltage is applied, a potential difference between the two plates creates an electric field, enabling charge transfer between them.

Conclusion

Aluminum electrolytic capacitors are an economical, versatile, and reliable choice for many electronic applications. Their ability to filter ripple, stabilize signals, and reduce inrush current make them a popular choice for those designing electrical devices. Aluminum electrolytic capacitors are also simple to construct and are among the cheapest types of capacitors on the market. For these reasons, aluminum electrolytic capacitors continue to be a top choice among capacitor manufacturers.

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