Polarization:	Polar
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.850" (47.00mm)
Size / Dimension:	0.394" Dia (10.00mm)
Lead Spacing:	0.197" (5.00mm)
Ripple Current @ High Frequency:	570mA @ 10kHz
Ripple Current @ Low Frequency:	380mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	CXW
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	5000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	450V
Tolerance:	±20%
Capacitance:	39µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, along with ceramic capacitors, are the two major types of capacitors. Aluminum electrolytic capacitors are predominantly used for their high capacitance values and relatively low cost. The model number 450CXW39MEFC10X45 belongs to the aluminum electrolytic capacitor family. It is a polarized capacitor that utilizes a liquid electrolyte instead of a solid form of dielectric material like ceramic capacitors. It is mainly used in applications where a very high capacitance value is required within limited space.

Construction

The construction of an aluminum electrolytic capacitor consists of two aluminum foils with a paper separator soaked with liquid electrolyte in between. Both aluminum foils are etched which gives them an extended surface area. One of the foils is rolled into a cylinder shape. The other serves as the anode. The electrolyte, a solution of boric acid and organic solvent, gives the capacitor higher capacitance values with low dielectric losses.

Application field

Aluminum electrolytic capacitors are widely used in motor drives, AC adapters, power supplies, audio equipment, lighting, etc. The 450CXW39MEFC10X45 capacitor is specifically used in high energy level applications such as power supplies, power regeneration, and energy back-up. It also has applications in voltage regulation, motor drives, and lighting.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on the Faraday law of electrolysis. It can be demonstrated by taking two aluminum plates in an electrolyte. When a voltage is applied between the plates, ions are attracted to the opposite plate. This creates a charge imbalance, leading to a high electrical field being generated between the plates. This electric field causes electrons to jump from one plate to the other, creating a polarized capacitor. The 450CXW39MEFC10X45 capacitor utilizes a liquid electrolyte, giving it a greater energy storage capacity, larger capacitance, and lower ESR compared to other types of capacitors.

Conclusion

In conclusion, the 450CXW39MEFC10X45 aluminum electrolytic capacitor offers a high capacitance value and is used in applications where a very high capacitance is required. It utilizes a liquid electrolyte instead of dielectric material, giving it higher energy storage capacity and lower ESR. While it is primarily used in power supplies, voltage regulation, motor drives, and lighting, it can also have applications in many other electronic circuits.

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