EKMQ451VSN271MR40S

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.575" (40.00mm)
Size / Dimension:	1.181" Dia (30.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	1.7017A @ 50kHz
Ripple Current @ Low Frequency:	1.19A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	KMQ
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	2000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	450V
Tolerance:	±20%
Capacitance:	270µF
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are an essential type of capacitor. They are generally used in a variety of applications, such as AC/DC converters, power supplies, switching power supplies, and computers. A typical application of aluminum electrolytic capacitors is to filter out transient voltage spikes in power supplies and other circuits.Aluminum electrolytic capacitors are built with rolled plates of pure aluminum foil with an oxide film or layer of dielectric material - typically manganese dioxide - between its plates. They also contain electrolytic solution or gel. This type of capacitor offers very high capacitance values in both electrolytic and non-electrolytic forms and is relatively inexpensive, making it a popular device for use in a wide variety of electronic products.

EKMQ451VSN271MR40S Application Field

The EKMQ451VSN271MR40S is an aluminum electrolytic capacitor from ELCA Capacitors, designed with a single radial lead for surface mount applications. The EKMQ451VSN271MR40S is rated for a capacitance of 4.7µF at 10V, a capacitance range of 3µF to 5.6µF, and a tolerance of ±20%. The maximum ripple current of this capacitor is 280mA (100kHz), and its temperature range is -25°C to +85°C.The EKMQ451VSN271MR40S is typically used in applications that require a low ESR and a low leakage current, such as switching power supplies, DC-DC converters, portable electronics and consumer electronics. It is also suitable for medical and aerospace applications due to its high temperature performance and wide capacitance range.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on the phenomena of capacitance and dielectric absorption. A USB cable with a black box of an electrolytic capacitor in its center.When a voltage is applied to the capacitor, the charged ions in the electrolyte migrate to the positive and negative terminals, thus forming an accumulation of electrons in each electrode (cathode and anode). These electron accumulations create an electric field, which causes the dielectric between the electrodes to be pulled toward the positive and negative electrodes, thus creating a charge separation and storing the electric energy, or the electrical capacitance.At the same time, the electric field also causes the dielectric material in the electrolyte to hold onto some of the charged ions, causing the phenomenon of polarization. This absorption of the ions by the dielectric increases the capacitance of the capacitor.

Conclusion

The EKMQ451VSN271MR40S aluminum electrolytic capacitor is an essential part of many electronic products, providing cost-effective and reliable capacitance. This capacitor is typically used in applications that require a low ESR and a low leakage current, and its wide capacitance range makes it suitable for a variety of medical and aerospace applications. The working principle of the aluminum electrolytic capacitor is based on the phenomena of capacitance and dielectric absorption, where the positive and negative terminals of an applied voltage cause electron accumulations to form, thus separating the charge and storing electricity.

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