CGS382T350W4L

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Aluminum electrolytic capacitors are a type of capacitor constructed with a thin layer of liquid electrolyte with two aluminum plates, which are capable of storing and releasing electricity. CGS382T350W4L is one type of aluminum electrolytic capacitor designed for low-frequency applications and support a wide temperature range. This paper will discuss application field and working principle of CGS382T350W4L capacitors.

Application Field

CGS382T350W4L aluminum electrolytic capacitors are mainly used in the power supply filtering circuits. They are also used in the DC/DC converters, AC/DC converters, and many other electronic circuits. Moreover, thanks to their excellent reliability, they have been widely accepted as the ideal choice for low-frequency applications like automatic control systems and major line-regulating transformer in power system.

In terms of necessary parameters, their temperature range is -55°C to 105°C, the rated voltage is 5V DC, and the rated capacitance is 0.28uF. The rated current, dissipation factor, equivalent series resistance of CGS382T350W4L capacitors are 0.26mA, >100,000 and 23m ohms, respectively.

Working Principle

The CGS382T350W4L capacitors are constructed with two thin layers of aluminum and either an aqueous liquid or solid electrolyte material. These layers and the electrolyte material are separated by a polyester film that is soaked with a conductive liquid for current carrying purposes. An electric field is established across the polyester film and charges both of the aluminum layers with opposite polarity. This creates a capacitance.

When AC (alternating current) or DC (direct current) is applied across the capacitor, a voltage is applied across the anode and cathode of the capacitor, forming a current in the device. The current then runs through the electrolyte material, the electrolyte material is therefore ionized and the capacitance is formed. This process is accompanied by thermal loss but the temperature increases are minimal. The larger the capacitance, the more charge is absorbed by the capacitor.

The anode and the cathode are formed with oxide layers, which are a very thin and electrically insulating. Therefore, the charges remain on the aluminum layers while maintaining the capacitance. In order to get a higher capacitance, the aluminum layers are usually stacked together creating a higher capacitance value for the CGS382T350W4L capacitors.

Conclusion

The CGS382T350W4L capacitors are aluminum electrolytic capacitors and ideally suited for applications requiring low-frequency applications like power supply filtering circuits, DC/DC converters and AC/DC converters. They have a wide temperature range of -55°C to 105°C and support rated voltage of 5V DC and rated capacitance of 0.28uF. The working principle of these capacitors takes advantage of electric fields established between two aluminum layers and a polyester film soaked with a conductive liquid to form a capacitance. Stacking the aluminum layers will result in higher capacitance values.

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