EKMH251VNN471MA25W

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.063" (27.00mm)
Size / Dimension:	1.378" Dia (35.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	2.355A @ 100kHz
Ripple Current @ Low Frequency:	1.57A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	KMH
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	2000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	529 mOhm @ 120Hz
Voltage - Rated:	250V
Tolerance:	±20%
Capacitance:	470µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors are one of the most important components used in many electronics and electrical systems. The EKMH251VNN471MA25W is an Aluminum Electrolytic Capacitor designed for applications requiring high capacitance for relatively high working voltage up to 63V and relatively small volume. The EKMH251VNN471MA25W is a type of Aluminum Electrolytic Capacitor, which is typically composed of an aluminum case, a spacer, two electrodes, a dielectric (IN947CA Organic Graphite), and an electrolyte. It consists of electrodes, each divided into two parts, one of which is an anode and the other one is a cathode. The anode is made of ultra-thin aluminum foil, which is etched with a pattern to maximize the surface area of the foil for optimal electrochemical performance. The anode also has a dielectric, with a low transmittance for dielectric losses. The cathode is usually made of conductive carbon material such as graphite. It consists of two parts with the first being the positive charged material and the second being the negative charged material.These two parts wrap around the anode and form a spacer between the two electrodes. This spacer prevents any direct contact between the two electrodes. This means that no current directly flows between them and so the charge on the two electrodes is isolated.As the voltage across the capacitor increases, a chemical reaction occurs on the surface of the anode, forming an oxide on the surface. This oxide forms a barrier layer between the two electrodes, preventing further current flow. In this way, the oxide acts as a dielectric, isolating the charge of the two electrodes and increasing the capacitance of the capacitor.The charge stored in the capacitor is determined by the number of plates, the area of the plates, the thickness of the dielectric, and the dielectric constant. The capacitance also changes with the frequency of the driving voltage. As the frequency of voltage increases, the size of the dielectric layer decreases, lowering the capacitance of the capacitor.The EKMH251VNN471MA25W is a highly reliable type of Aluminum Electrolytic Capacitor. It is usually used in applications which require high capacitances and relatively small spaces. This type of capacitor is also used for voltage filtering and noise suppression. It can also be used in industrial applications, such as motor drives, UPS systems, PFC circuits, and other high-power DC circuits.In conclusion, the EKMH251VNN471MA25W is an Aluminum Electrolytic Capacitor designed for applications where the capacitance needs to be high and the size of the component needs to be relatively small. The working principle is based on the chemical reaction of the oxide layer formed on the surface of the anode, thus isolating the two electrodes. This capacitor is useful in high-power DC circuit applications, such as motor drives, UPS systems, and PFC circuits.

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