381LQ821M400A052

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	2.047" (52.00mm)
Size / Dimension:	1.378" Dia (35.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	3.2A @ 20kHz
Ripple Current @ Low Frequency:	2.3A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	381LQ
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	2000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	200 mOhm @ 120Hz
Voltage - Rated:	400V
Tolerance:	±20%
Capacitance:	820µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

381LQ821M400A052 application field and working principle

Aluminum electrolytic capacitors are the most useful type of capacitors used in the fields of electrical engineering these days. They are characterized by their large capacitance for a given size, and their ability to handle high voltages and currents. The type of capacitor in question here, the 381LQ821M400A052, is an especially unique type of aluminum electrolytic capacitor. Its application fields and working principle will be explained in this article.The 381LQ821M400A052 is a non-solid aluminum electrolytic capacitor. It is thus extremely suitable for applications that require high values of capacitance but at the same time, require a small size. This makes it a frequent choice in the fields of power supply, frequency control, and filtering, where a high capacitance is needed but at the same time, space is at a premium.The 381LQ821M400A052 works on the principle of electrolytic capacitance. This means that it has two electrodes separated by an electrolyte. The aluminum component of the capacitor is the positive electrode, while the cathode is composed of an aluminum oxide film. This film acts as an insulating layer that prevents the current from passing between the two electrodes.When the capacitor is connected to a voltage source, the electrolyte ions collect around the positive electrode. This creates a positive charge on the surface of the positive electrode and attracts negative ions from the electrolyte to the surface of the negative electrode. This results in a buildup of electrical energy between the two electrodes, which is expressed as a capacitance value.The unique feature of the 381LQ821M400A052 is that it has a very low ESR (Equivalent Series Resistance). This means that it experiences very little power loss when used in applications involving high currents or high frequencies, making it a very efficient capacitor for those applications.The low ESR also helps in another area. As the capacitor takes in high currents and frequencies, its temperature increases quickly. The low ESR helps to keep this increase in temperature to a minimum, preventing the capacitor from becoming damaged from the heat. This helps to ensure a longer lifespan and better reliability for applications where the 381LQ821M400A052 is used.The 381LQ821M400A052 is a unique type of aluminum electrolytic capacitor that offers excellent performance and reliability. Its small size and high capacitance make it an often chosen component for applications in the fields of power supply, frequency control, and filtering, particularly for situations where high currents and high frequencies are needed. It\'s low ESR ensures that it only experiences little power losses and is able to maintain its temperature during its operation.

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