865230140001

Polarization:	Polar
Package / Case:	Radial, Can - SMD
Mounting Type:	Surface Mount
Surface Mount Land Size:	0.169" L x 0.169" W (4.30mm x 4.30mm)
Height - Seated (Max):	0.217" (5.50mm)
Size / Dimension:	0.157" Dia (4.00mm)
Lead Spacing:	--
Ripple Current @ High Frequency:	33mA @ 10kHz
Ripple Current @ Low Frequency:	22mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	WCAP-AS5H
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	5000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	6.3V
Tolerance:	±20%
Capacitance:	22µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Aluminum Electrolytic Capacitors

Introduction

Aluminum electrolytic capacitors are one of the most common types of capacitors. These capacitors are polarized electrolytic capacitors, meaning they hold an electrical charge and have an anode and a cathode. They are constructed from an aluminum foil with an oxide layer, known as the dielectric layer. The dielectric layer is then inserted into a non-conductive material known as the electrolyte.

Application Field and Working Principle

Aluminum electrolytic capacitors are used in various different applications, such as power supplies, high voltage circuits, and signal conditioning circuits. These capacitors are typically used to filter out high frequency noise, and are also used to match impedance circuits. The aluminum electrolytic capacitors work on the principle of storing an electrical charge within the capacitor. When a voltage is applied to the capacitor, the dielectric layer responds to the electric field created by the applied voltage. This causes a charge to flow into the capacitor, which is proportional to the applied voltage. At the same time, the liquid electrolyte provides a mechanism for the charge to move back and forth through the capacitor, as the electric field changes.The capacitance of the capacitor is determined by the amount of charge that can be stored in the dielectric layer. This is determined by the thickness of the dielectric layer, the area of the foil, and the absolute permittivity of the dielectric material.The capacitance of an aluminum electrolytic capacitor is also affected by the age of the capacitor, as the dielectric layer starts to degrade over time, causing the capacitance to decrease.The maximum operating temperature for aluminum electrolytic capacitors is typically between -40°C and +125°C.

Types of Aluminum Electrolytic Capacitors

There are several different types of aluminum electrolytic capacitors, including axial and radial lead capacitors, surface mount capacitors, snap-in capacitors, and screw-mount capacitors. Axial lead aluminum electrolytic capacitors have leads that are connected to the capacitor body and are arranged along the length of the capacitor body. Radial lead capacitors, on the other hand, are more compact, as the leads are connected to the capacitor body and extend in a radial direction away from the body. Surface mount capacitors are designed to be soldered directly onto a PCB, and are suitable for high density applications. Snap-in capacitors are designed to snap into a mounting hole, and offer a secure connection and good heat dissipation. Screw-mount capacitors are typically used in high voltage applications, and require a mounting hole and a screw for secure connections.

Conclusion

Aluminum electrolytic capacitors are a type of polarized electrolytic capacitor that are used in various applications, such as power supplies, high voltage circuits, and signal conditioning circuits. These capacitors work on the principle of storing an electrical charge in the dielectric layer, which is affected by the thickness of the dielectric layer, the area of the foil, and the absolute permittivity of the dielectric material. They come in several different types, including axial and radial lead capacitors, surface mount capacitors, snap-in capacitors, and screw-mount capacitors.

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