ALF20C472EE100

Ratings:	--
Package / Case:	Radial, Can - Snap-In - 4 Lead
Mounting Type:	Through Hole, Press-Fit
Surface Mount Land Size:	--
Height - Seated (Max):	1.850" (47.00mm)
Size / Dimension:	1.575" Dia (40.00mm)
Lead Spacing:	0.886" (22.50mm)
Impedance:	61 mOhms
Ripple Current @ High Frequency:	5.83A @ 10kHz
Ripple Current @ Low Frequency:	5.6A @ 100Hz
Applications:	General Purpose
Series:	ALF20
Polarization:	Polar
Operating Temperature:	-40°C ~ 85°C
Lifetime @ Temp.:	2000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	70 mOhm @ 100Hz
Voltage - Rated:	100V
Tolerance:	±20%
Capacitance:	4700µF
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction of Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, also called aluminum electrolytic capacitors or electrolytic capacitors, are electrical component devices that store electrical energy in an electrostatic form and use electrolytic oxides that can withstand high voltage as dielectric. Generally, it consists of a screw shell, an insulating sleeve, a shell cap, a polar conductor (anode plate and cathode plate), and an electrolyte. Its characteristics are determined by the film thickness, polarity, and electrolyte type. Common types of aluminum electrolytic capacitors include ultra-high frequency capacitors, polar capacitors, non-polar capacitors, miniaturized capacitors, and surface mount capacitors.

ALF20C472EE100 Application Field and Working Principle

The ALF20C472EE100 is a kind of aluminum electrolytic capacitor. It is a non-polarized aluminum electrolytic capacitor with a voltage rating of 20V, capacitance of 4.7μF, and maximum operation temperature of +100 ℃. It is designed for surface mount applications, which are widely used in industrial, automotive, consumer and military electronics.The working principle of the ALF20C472EE100 is based on the principle of an electrochemical capacitor. It consists of two metal electrodes working as opposite polarities, a liquid or solid electrolyte, and a porous separator. When voltage is applied between the two electrodes, electric charges build up on both sides and an electric field is established within the capacitor. This electric field will store electrical energy and release it when the voltage changes.When the capacitor is charged, electrons move to the aluminum foil from the negative electrode and move to the electrolyte from the positive electrode. As the foil expands, a thin oxide film will be formed on the aluminum surface and the capacitance will be achieved. When the capacitor is discharged, the electrons that were moved to the electrolyte will return to the aluminum oxide. The expanded oxide film will shrink and the capacitance will decrease. This helps maintain the capacitance and ensures the stable performance of the capacitor in long term high temperature applications.

Conclusion

The ALF20C472EE100 is a kind of aluminum electrolytic capacitor which is widely used in industrial, automotive, consumer, and military electronics. It has a voltage rating of 20V, capacitance of 4.7μF and maximum operation temperature of +100 ℃. Its working principle is based on the electochemical principle, where electric charges build up on both metal electrodes and an electric field is established within the capacitor. This electric field helps store electrical energy and release it when the voltage changes. Therefore, the ALF20C472EE100 is an ideal electrical component for many applications.

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