ESMQ421VSN331MR30S

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.457" (37.00mm)
Size / Dimension:	1.181" Dia (30.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	3.1031A @ 50kHz
Ripple Current @ Low Frequency:	2.17A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	SMQ
Operating Temperature:	-25°C ~ 85°C
Lifetime @ Temp.:	2000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	420V
Tolerance:	±20%
Capacitance:	330µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction
Aluminum electrolytic capacitors, more often referred to simply as "aluminum electrolytics", are one of the most commonly used types of electrolytic capacitors. They consist of two metal plates - one of aluminum and one of a semi-porous metal oxide material - that are separated by an electrolyte solution. This type of capacitor is made up of various components, including a housing that contains two electrodes made from aluminum foil, an electrolyte that works to separate the electrodes and provide an electric field, and a dielectric material that acts as an insulator between them. This kind of capacitor can be used in a wide variety of applications, ranging from consumer electronics to power supplies and industrial applications.

ESMQ421VSN331MR30S application field and working principle
ESMQ421VSN331MR30S is a general purpose, axial-leaded aluminum electrolytic capacitor suitable for use in a variety of applications that require capacitance values ranging from 100µF to 2200µF. The main feature of this type of capacitor is its ability to deliver excellent performance in either a high- or low-impedance environment. This type of capacitor is ideal for use in AC applications where high capacitance values are required, such as for buck and boost converters, rectifiers, and power supplies.

The ESMQ421VSN331MR30S capacitor works by using an electrolyte to separate two plates which are made out of aluminum. The aluminum is very thin and contains an oxide layer on the surface. The oxide layer helps maintain the electrical insulation and blocks the flow of electrons between the plates. The electrolyte is a solution of water and a trace amount of other chemicals, such as ammonium bicarbonate. This creates an electrolytic field between the two plates, allowing electrons to flow in the direction of the field.

The oxide layer of the ESMQ421VSN331MR30S capacitor also acts as an insulator against outside interference. This ensures that when the capacitor is placed in an AC circuit, it behaves like a resistive load, reducing noise and interfering signals from other components in the circuit.

When used in DC circuits, this type of capacitor performs similarly to a non-polarized capacitor. While it is not as efficient at reducing noise as a polarized capacitor, it is still able to reduce interference in the circuit. This is due to the electrical insulation that is created by the oxide layer on the aluminum plates. When used in an AC circuit, the capacitor acts as an inductor, helping increase voltage and current levels in high-impedance applications.

Conclusion
The ESMQ421VSN331MR30S capacitor is a general-purpose aluminum electrolytic capacitor that can be used for a variety of applications ranging from AC to DC circuits. It is able to deliver excellent performance in either high- or low-impedance applications. The aluminum plates of the capacitor are separated by an electrolyte solution. The oxide layer helps maintain the electrical insulation and blocks electrons from passing between the plates. The capacitor also acts as an inductor in an AC circuit, helping to increase voltage and current levels.

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