381LR820M400H012

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Aluminum electrolytic capacitors, also known as electrolytic capacitors, electrolytic condensers or el-caps, are passive electronic components which store an electrical charge using an electrolyte. They are commonly used in power supplies, frequency converter/inverter circuits, as well as a number of other industrial, automotive and consumer electronics products. The specific model of capacitor under discussion, the 381LR820M400H012, is a type of aluminum electrolytic capacitor, and is designed primarily for use in enhanced filtering capability, line filtering, improved EMC performance and temperature compensation applications.The 381LR820M400H012 is a particularly robust capacitor, being rated for both 55 degrees C and 85 degrees C, along with a capacitance rating of 8200mf and a larger size than that commonly used for electrolytic capacitors. It also has a max voltage rating of 400V and a very high ripple current. For its size, this capacitor has a particularly low Equivalent Series Resistance (ESR), ranging from .26 to .38 with an operating temperature range of – 40 to +105 degrees C. This makes it ideal for high-powered, high-voltage applications.The working principle of an aluminum electrolytic capacitor is relatively simple. It consists of a solid anode, a positively-charged material, and a liquid electrolyte, a negatively-charged material. When a voltage is applied across the two materials, a small amount of current flows and electrolysis takes place, creating two distinct layers separated by a thin insulating layer which acts as a dielectric. This layer is known as the alumina layer.The capacitance of the 381LR820M400H012 aluminum electrolytic capacitor is determined by the area of the insulating layer and the permittivity of the material used in its construction. In the case of this specific model, the anode is composed of a lithium aluminum alloy, making it an effective dielectric and capable of storing large amounts of electrical charge. This makes it well suited for applications where high capacitance and high voltage ratings are required.Aluminum electrolytic capacitors like the 381LR820M400H012 are also widely used in energy storage applications, such as solar energy and mobile applications. In solar energy systems, they are commonly used to store the energy produced by solar panels in a battery pack. This allows the system to continue providing power even when the sun is not shining. In mobile applications, they are used for fast charging and powering the device.The 381LR820M400H012 certainly makes an excellent choice for a wide range of applications requiring high capacitance and high voltage ratings. This capacitor is well suited for both high current applications and price sensitive applications, and is sure to meet the needs of most any application. It is highly reliable, capable of withstanding high temperatures and voltage, and its low ESR rating make it even more suitable for many power supply applications. 

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