ESMG630ELL152MN30S

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Aluminum electrolytic capacitors are the most widely used type of capacitors and are easily recognizable for their cylindrical shape. They have a low volumetric efficiency and a large capacitance range, making them a cost-effective solution for many power electronics applications. The ESMG630ELL152MN30S is a large-sized aluminum electrolytic capacitor that’s designed for high-temperature, high-power applications. This type of capacitor offers excellent voltage and ripple current capability, making it ideal for powering high-current DC power supplies and pulse-power circuits.

Overview

The ESMG630ELL152MN30S aluminum electrolytic capacitor is part of the EMG630ELL series manufactured by KEMET. It measures 31mm in diameter and 52mm in height and has a rated capacitance of 6,300µF. This capacitor has a voltage rating of 630V DC and water-resistant Epoxy Coated terminations, which are best suited for outdoor use. The operating temperature range is at -20°C to 105°C. The rated ripple current of this capacitor is 304A at 105°C and 24kHz.

Construction

The interior construction of the ESMG630ELL152MN30S aluminum electrolytic capacitor contains two electrodes and a non-conductive electrolyte. This capacitor has a spiral-rolled aluminum foil that is anode-active, negative polarity, and the cathode is passive and positive polarity. Its electrolyte is a gel or liquid, depending on the design, which impregnates the aluminum foil. The capacitor’s heavy duty plastic case is corrosion-resistant and has water-resistant Epoxy Coated terminations that help protect against moisture and dust damage.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on the separation of charges. When voltage is applied, induced charge accumulates on the opposite metal foil. These charges attract ions of electrolyte which occupy the space between them. When the voltage is removed, the electrolyte, ions, and charges remain at their respective polarities until the voltage is reapplied. The amount of charge stored by an aluminum electrolytic capacitor is determined by its capacitance, which is inversely proportional to the spacing between the electrodes.

Application Fields

The ESMG630ELL152MN30S aluminum electrolytic capacitor is designed for high-temperature, high-power applications such as DC power supplies, automotive and industrial electronics, and pulse-power circuits. It is also ideal for use in power supplies, motor drives, switching power supplies, DC-DC converters, mini-inverters, welding control systems, and other applications that require good ripple current capability.

Conclusion

The ESMG630ELL152MN30S aluminum electrolytic capacitor is a high-temperature, high-power capacitor that is designed for extreme applications. Its low volumetric efficiency and excellent voltage and ripple current capability make it a great choice for power electronics applications. It operates according to the principles of charge separation, and its capacitance is inversely proportional to the spacing between its electrodes. Its heavy duty plastic case and water-resistant Epoxy Coated terminations make it well-suited for outdoor use in industrial and automotive electronics, DC power supplies, and pulse-power circuits.

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