EKMM421VSN121MQ30S

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.260" (32.00mm)
Size / Dimension:	1.000" Dia (25.40mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	1.0725A @ 50kHz
Ripple Current @ Low Frequency:	750mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	KMM
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	3000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	2.763 Ohm @ 120Hz
Voltage - Rated:	420V
Tolerance:	±20%
Capacitance:	120µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor (AEC) is a device that stores electric energy using two thin aluminum foil layers that are separated by an electrolyte material. The electric energy stored in an AEC is due to the polarized nature of the aluminum foil, which arises from the favorable charge and matched oxide layer thicknesses of the two layers. The electrolyte material is usually an organic absorbent material, and acts as the insulating material between the two layers.Aluminum electrolytic capacitors are widely used for electrostatic energy storage, filtering, bypassing and many other applications in both the consumer and industrial markets. They provide high capacitance in a relatively small package, and come in a variety of ever-changing shapes and sizes to suit specific applications.

EKMM421VSN121MQ30S Application Field and Working Principle

EKMM421VSN121MQ30S is an aluminum electrolytic capacitor. It is used mainly for energy storage and filtering. The key features of this model include very low equivalent series resistance (ESR) and long shelf life in storage. The ESR is traditionally better than standard ceramic capacitors, and the increased shelf life is a result of the adsorbing properties of the electrolyte. Additionally, the ESR in this model is reduced due to the application of a novel combination of both organic and inorganic materials, giving the capacitor superior electrical performance.The working principle of the EKMM421VSN121MQ30S is based on the Faraday principle of electrolysis. This principle states that when a voltage is applied across a material, electric current will flow if the material is conductive. The electrolyte serves as a conductor for the electric current, and the electric charge is stored on the aluminum layers as a result. The stored electric charge is basically static and not affected by the applied voltage, allowing the capacitor to hold its charge more efficiently than other types of capacitors. This property makes aluminum electrolytic capacitors ideal for applications where high current is required, such as filtering or energy storage.

Conclusion

Aluminum electrolytic capacitors are a vital part of many electronic devices. They provide the necessary energy storage and filtering for a variety of applications. The EKMM421VSN121MQ30S is a high-performance aluminum electrolytic capacitor that is designed for applications where high electric current is required. Its low equivalent series resistance and long shelf life make it suitable for a wide range of uses.

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