LGR2W121MELA45

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Aluminum electrolytic capacitors are a type of capacitor that uses an electrolyte – typically aqueous or nonaqueous – to facilitate the flow of electrical current from one electrode to the other. In this type of capacitor, the two electrodes will be made from aluminum and the electrolytes used to provide the charge current will be aqueous or nonaqueous.

LGR2W121MELA45 is a specific part model and abbreviation of this type of aluminum electrolytic capacitor. The “L” stands for the size of the capacitor, which is 21.5mm in diameter and 22.5mm in length. The “GR” stands for the type of capacitor, which is a radial unit and the “2” represents the number of capacitors in a single package. The “W” stands for the working voltage range, which is 25-450VDC. The “MEL” represents the electrolyte type, which is a non-aqueous electrolyte. Finally, the “A45” indicates the temperature coefficient value, which is -45 – +15%.

The primary applications of this aluminum capacitor are high frequency and high voltage circuit, as well as other electronics applications that require high energy storage, high current stability and low noise. This part can also be used in high power switch mode power supplies, dc-dc converters, and power factor correction circuits. Its high working voltage and long-term life offer improved performance under a variety of operating conditions, making it suitable for a wide range of applications, from printing presses and welding machines to audio equipment and lighting instruments.

The working principle of this aluminum capacitor is simple. Electrons from the negative electrode react with the cations contained in the electrolyte and form an oxide layer on the aluminum surface. This oxide layer is what prevents the capacitor from discharging.

When a voltage is applied to the capacitor, an electric field is created across the oxide layer and electrons flow through the oxide layer to the other side, forming a charge in the process. This charge creates an opposite electric field, which acts in opposition to the original electric field and eventually prevents further electron flow.

The charge is stored until a higher voltage is applied to the capacitor, which pushes the electrons to the other side, where a positive charge accumulates and the process begins again. This mechanism is repeated as long as the voltage supplied is higher than the voltage of the capacitor.

This aluminum capacitor is capable of providing low impedance and long-term stability, allowing it to be reliably used in a variety of applications. Its ability to handle large voltage and high frequency, combined with its long-term reliability, makes it a popular choice for applications that demand circuit protection and efficient current management.

The specific data is subject to PDF, and the above content is for reference