420MXH390MEFCSN35X30

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are the most common option for use in electronic circuits or systems. They have a higher capacitance than ceramic capacitors and can be used in direct current or alternating current applications. These capacitors are also used in applications such as motor control, audio/video equipment, lighting control, and telecommunications.

A 420MXH390MEFCSN35X30 aluminum electrolytic capacitor is a type of electrolytic capacitor with a capacitance of 420 microfarads. It is usually sold in an axial lead package. The dimensions of the device are 390 millimeters long, 35 millimeters in diameter, and 30 millimeters in height. It is usually rated for operation in a temperature range of -55°C to +125°C.

The construction of an aluminum electrolytic capacitor consists of two metal plates that form an electrical junction. One metal plate is called the anode and the other is called the cathode. The anode is usually made of aluminum or other metal and is kept wet with a liquid electrolyte, usually a mixture of alcohol and water. An oxide layer then forms on the anode, forming an insulating barrier between the plates.

The electrical connection between the plates is established through the electrolyte. When a voltage is applied to the capacitor, the oxide layer breaks down and current begins to flow. This current excites the ions in the electrolyte, and an electrical potential difference is established between the plates. This results in a capacitance, and therefore an electrical storage element.

The 420MXH390MEFCSN35X30 aluminum electrolytic capacitor is used in various applications requiring a large capacitance. These include power supply, motor control, audio and video equipment, telecom, lighting control, inverters and backups. They are also used in due-level applications such as power factor correction and power management, as well as in noise suppression and harmonic distortion applications. Due to its high capacitance, this capacitor is particularly suitable for high voltage applications, such as in automotive systems.

Although the oxide layer of the aluminum electrolytic capacitor provides insulation, an external insulator may still be required depending on the application. For example, when used in high voltage applications, the capacitor should be placed in a sleeve that is resistant to the voltage to prevent flashover. Another important factor to consider when selecting an aluminum electrolytic capacitor for an application is its leakage current and its equivalent series resistance.

In conclusion, the 420MXH390MEFCSN35X30 aluminum electrolytic capacitor is an important device for applications requiring a large capacitance, such as power supplies and motor control. Its construction is simple, and it is widely available and relatively inexpensive. It is important to consider the leakage current and equivalent series resistance when selecting an aluminum electrolytic capacitor, and an external insulator may be required depending on the application.

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