381LX821M250K052

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:	1.181" Dia (30.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	2.8A @ 20kHz
Ripple Current @ Low Frequency:	2A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	381LX
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	3000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	243 mOhm @ 120Hz
Voltage - Rated:	250V
Tolerance:	±20%
Capacitance:	820µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Aluminum electrolytic capacitors are widely used electronic components for storing and releasing electrical energy. They are found in a variety of applications, from portable electronic devices, to automotive, aerospace, and military applications. It is important to understand the general principles of such components in order to maximize the performance and reliability of the system in which they are used. The model number 381LX821M250K052 is a radial leaded multipolar aluminum electrolytic capacitor, and this section will briefly cover its application field and working principle.

Application Field

Aluminum electrolytic capacitors are most commonly used for power supply filtering, also known as smoothing. This type of capacitor is often used in power supplies, switching-mode power supplies, and unregulated power supplies. It is used to store electrical energy to help reduce the peak current values, minimize ripple, stabilize the output, and improve the overall performance of the power supply. Other applications for aluminum electrolytic capacitors include signal coupling, oscillation, and noise suppression.In general, aluminum electrolytic capacitors are best suited for applications that require small volumes of capacitance, because they offer higher capacitance values and low dissipation factors compared to other types of capacitors. They are also suitable for high-frequency operations, which require rapid transient response. Aluminum electrolytic capacitors have a wide range of operating temperatures, a good Life expectancy, and in general can handle more voltage than ceramic and other electrolytic capacitors.

Working Principle

Aluminum electrolytic capacitors are composed of two plates wrapped in a dielectric layer and separated by an electrolyte solution. The two plates are made of an electrolytic material such as aluminum, titanium, tantalum, or niobium. When a voltage is applied between the two plates, electric current begins to flow, leading to the formation of a film of oxide on the surface of the plates. This oxide layer acts as an insulating layer and allows for higher capacitance values.The 381LX821M250K052 aluminum electrolytic capacitor has a voltage rating of 500 volts. It has a capacitance range from 82 to 250 μF, depending on what voltage is applied. The dissipation factor of the 381LX821M250K052 capacitor is typically between 0.05 and 0.20. The operating temperature of the 381LX821M250K052 aluminum electrolytic capacitor ranges from -55 up to +105 degrees Centigrade.

Conclusion

The 381LX821M250K052 aluminum electrolytic capacitor is a useful component for various electronic applications such as smoothing, signal coupling, oscillation, and noise suppression. Aluminum electrolytic capacitors offer high capacitance values and low dissipation factors, making them well-suited for high-frequency operation applications. They also have a wide operating temperature range and long lifespan. It is important to understand the general principles of such components and their application fields in order to maximize the performance and reliability of the system in which they are used.

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