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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (also known as electrolytically formed capacitors) are electronic components that are used for a variety of purposes, from power conditioning and smoothing applications, to filtering and signal conditioning.

The aluminum electrolytic capacitor family includes the 420VXS330MEFC30X40, a large-can type capacitor designed for power conditioning and filtering in switchmode power supplies and ac-dc converters. It is designed to handle high transient voltages and current up to 225A peak. Its stellar performances when subjected to shock and vibration is unmatched, making it a good choice for automotive applications when space and energy efficiency requirements are stringent.

Aluminum electrolytic capacitors work by forming an oxide film on its anode plate, formed using an electrolytic process. An electrolyte is then added and the plates are rolled and placed in a capacitor case. A positive voltage applied to the anode causes the oxide film to form, and when a far greater negative voltage is applied, the oxide film repels the charge while allowing passage of current.

The 420VXS330MEFC30X40 Aluminum Electrolytic Capacitors should be considered for various applications, particularly those requiring high peak currents, compact size, and long life expectancy. It is designed for filtering noise, decoupling of high frequency signals, and for noise reduction in high-power amplifiers. Some other industrial and military applications include motor drives, power supplies, simulators, welders, digital equipment, and automation systems.

The 420VXS330MEFC30X40 features a 17mm case diameter and a 50mm x 57mm case size, with a 30mm bolt diameter. It has a rated voltage of 420V, a capacitance of 330 uF, and it is rated for a temperature of up to +85°C and/or up to 105°C. Its ripple current rating is 2400μFpp and it can tolerate high transient load pulses of 225A peak.

In addition, the 420VXS330MEFC30X40 features a unique combination of a low equivalent series resistance (ESR) of 5mOhms at +85°C, a long life expectancy with a guaranteed endurance of 10,000 hours at full load design temperature (105°C) and a 500,000-hour life test rating of 105°C/85% rated voltage - far exceeding the 10,000 hour strength of traditional electrolytic capacitors.

In conclusion, the 420VXS330MEFC30X40 is an excellent choice for many applications thanks to its robust design and reliable performance. Its low ESR and wide temperature range offer stability and longevity, making it the perfect choice for power conditioning and filtering tasks.

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