EKMM451VSN820MN35S

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Aluminum Electrolytic Capacitors

The EKMM451VSN820MN35S is a type of aluminum electrolytic capacitor commonly used in power supplies, used for its high capacitance and long-term dependability. These devices are especially advantageous in the realm of power-electronics, where energy storage and discharge take place over short periods of time.

Application Field

The functionality of aluminum electrolytic capacitors is usually chosen by two main considerations: capacitance and voltage. The EKMM451VSN820MN35S in particular is designed specifically for general power applications such as power supplies and motors. With a relatively low maximum operating voltage of 25VDC and a capacitance of 451F this capacitor is well suited for a wide range of general power applications.

This device can also be used to smooth out noise in pulse width modulation (PWM) controllers, providing an extra layer of signal stability especially in systems that rely heavily on the accuracy and steadiness of the delivered signal.

Aluminum Electrolytic Capacitors are also increasingly popular in protecting automotive electronics against large spikes of DC current, particularly since the advent of electric and hybrid cars. These larger capacitors can absorb and dissipate vast amounts of current when placed far enough in the circuit to protect other sensitive components from harm.

Working Principle

An electrolytic capacitor is made of a non-polarized electrolyte film as well as two aluminum foils or metal films, facing each other and separated by a dielectric film. The electrolyte can be a liquid or a paste that conducts ions, and the two films are a positive film (anode) and a negative film (cathode). The negative foil is coated with an oxidation film, which acts as a dielectric material.

Basically, when voltage is applied across the electrodes, the chemical properties of the electrolyte cause ions to move from the anode to the cathode. This creates an electrical field between the anode and the cathode, creating stored energy that can later be released when the capacitance is discharged. This type of capacitor exhibits a high capacitance for its size, and a long-term dependability that makes them suitable for power applications.

Another important factor is the equivalent series resistance (ESR) of the capacitor. This is the overall resistance created by the component itself, and affects the power supply and the performance of other components to which this capacitor is connected. The ESR of this particular device is quite low, making it suitable for applications where accuracy and high performance are required.

Conclusion

The EKMM451VSN820MN35S aluminum electrolytic capacitor is suitable for a wide range of general power applications that require high capacitance and dependability. Its low equivalent series resistance (ESR) make it suitable for applications that require accuracy and high performance, such as PWM controllers or protecting automotive electronics from high current spikes. This capacitor is a popular choice for many power-electronics applications, and is likely to remain so for years to come.

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