ALF20C391EF550

Ratings:	--
Package / Case:	Radial, Can - Snap-In - 4 Lead
Mounting Type:	Through Hole, Press-Fit
Surface Mount Land Size:	--
Height - Seated (Max):	2.047" (52.00mm)
Size / Dimension:	1.575" Dia (40.00mm)
Lead Spacing:	0.886" (22.50mm)
Impedance:	780 mOhms
Ripple Current @ High Frequency:	4.33A @ 10kHz
Ripple Current @ Low Frequency:	2.67A @ 100Hz
Applications:	General Purpose
Series:	ALF20
Polarization:	Polar
Operating Temperature:	-40°C ~ 85°C
Lifetime @ Temp.:	2000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	894 mOhm @ 100Hz
Voltage - Rated:	550V
Tolerance:	±20%
Capacitance:	390µF
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are a type of capacitor characterized by its large capacitance in small volume, which is achieved by using an electrolyte to form an oxide film on the surface of its aluminum foil component. This type of capacitor is widely used in many fields such as the radio, motor drive, rectification, energy storage, filter, and memory protection circuit. The ALF20C391EF550 is one of these aluminum electrolytic capacitors that functions to store electrical energy and filter higher frequency combinations. The ALF20C391EF550 is a double-ended aluminum electrolytic capacitor with a capacitance of 390uF and a working voltage of 50V. Its maximum operating temperature range is between -40 and 60 degrees Celsius. And its horizontal design is visually aesthetical. It has a wide range of applications including noise reduction, power factor correction, intermediate frequency filtering, and thump suppression.

Working Principle

The ALF20C391EF550 capacitor works by connecting two electrodes, one anode and one cathode, to an electrolytic solution. The anode is made of aluminum foil on which a layer of oxide is formed. Voltage is then applied across the two electrodes, resulting in a current that causes ions to be attracted to the anode. This layer of ions acts as a dielectric between the two aluminum plates, allowing the capacitor to store charge. The charge is not lost since the electrolyte serves as a continuous pathway for current to flow, even when the voltage is removed. The capacitor also has a load lifetime of 5000 hours. This means that it is able to retain its charge for a certain period of time and is hence more reliable compared to other types of capacitors. This operational longevity serves as an advantage with regards to the quality and reliability of the product.

Application Field

The ALF20C391EF550 capacitor is widely used in various applications like power supplies and lighting systems. It serves as a circuit component in power supplies, providing energy to the electrical system and then storing it for future use. It is also used in lighting systems, acting as a filter and regulating the voltage and current fluctuations in the circuit.The capacitor is also commonly used in the oil industry as a safety device. It allows for the timely discharge of electrical energy in order to protect the safety of personnel and equipment. It is often used in combination with motor capacitors to increase the torque of motors, and it also finds use in soft starters, circuit protection, and hand held instruments. Aside from the abovementioned applications, the ALF20C391EF550 is also used in commercial and consumer electronic equipment, home appliances, and automotive systems. It is also widely employed in the cellular industry in order to provide greater functionality and energy efficiency in mobile phones and other handheld devices.

Conclusion

The ALF20C391EF550 is one of the most widely used aluminum electrolytic capacitors. It has a large capacitance in small volume, and its high working voltage and maximum operating temperature range make it suitable for many different applications. It is used in power supplies, lighting systems, and oil industry as a safety device. It is also employed in various commercial and consumer electronics, home appliances, and automotive systems. With its good reliability and long lifetime, the ALF20C391EF550 is an excellent choice for areas requiring high performance and reliability.

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