ALF40C391EF500

Series:	ALF40
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Capacitance:	390µF
Tolerance:	±20%
Voltage - Rated:	500V
ESR (Equivalent Series Resistance):	580 mOhm @ 100Hz
Lifetime @ Temp.:	5000 Hrs @ 105°C
Operating Temperature:	-40°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	2.94A @ 100Hz
Ripple Current @ High Frequency:	5.81A @ 10kHz
Impedance:	470 mOhms
Lead Spacing:	0.886" (22.50mm)
Size / Dimension:	1.575" Dia (40.00mm)
Height - Seated (Max):	2.047" (52.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole, Press-Fit
Package / Case:	Radial, Can - Snap-In - 4 Lead

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Aluminum Electrolytic Capacitors

Aluminum Electrolytic Capacitors (AECs) are a type of polarized capacitor which uses an aluminum oxide membrane as its dielectric. AECs are usually constructed with two metal plates, separated by a thin oxide membrane, which enables them to store electrical energy. AECs are most commonly used in consumer electronics, as they are highly efficient and offer a large amount of energy storage in a small form factor.The ALF40C391EF500 is an AEC which is specifically designed for use in automotive applications. Its features include a rated queuing voltage of 25VDC, an allowable temperature range of -55°C to +105°C, a rated capacitance of 39µF and an impedance of 25 milliohms. These characteristics make the ALF40C391EF500 an excellent choice for use in a variety of automotive applications, particularly those which require substantial amounts of electrical energy storage.The working principle of the ALF40C391EF500 is quite simple. When the capacitor is not connected to any external power source, it is able to store electrical energy in the form of an electric field between its two electrodes. This electrical energy is stored in the form of an electrical charge, which is built up by the reactive movement of the electrons across the dielectric.When the capacitor is connected to an external power source, the electrode charges can be used to complete a circuit. As electrons flow from the external power source, they are attracted to the negative electrode. The negative electrode then releases electrons, which are then attracted to the positive electrode. The release of electrons from the negative plate and the attraction of electrons to the positive plate creates an electric current which is what allows the capacitor to store and release energy.When the capacitor is connected to an external power source and the electric current begins to flow, the electric field begins to weaken until the capacitor has discharged all of its stored energy. At this point the current stops flowing, the electric field is no longer present and the capacitor has returned to its original state until it is needed once again.The ALF40C391EF500 is a versatile AEC which has a wide range of applications. It is commonly used in automotive audio systems, consumer electronics devices, power supplies, LED displays, and many other automotive applications. Its features make it an ideal choice for automotive applications which require a reliable, long-lasting, and efficient energy storage solution.

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