LGG2W391MELB40

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.654" (42.00mm)
Size / Dimension:	1.181" Dia (30.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	1.9734A @ 50kHz
Ripple Current @ Low Frequency:	1.38A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	LGG
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	2000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	450V
Tolerance:	±20%
Capacitance:	390µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are some of the most widely used capacitors in the world. They are used in a wide range of applications in electronics, from power supplies and instrumentation to communications and consumer electronics. This article will discuss the application field and working principle of the LGG2W391MELB40 aluminum electrolytic capacitor.The LGG2W391MELB40 is a type of electrolytic capacitor that uses an aluminum oxide film as the dielectric material. This capacitor has long life, is reliable, and has excellent voltage handling capability. It is typically used in applications where high capacitance and low ESR (equivalent series resistance) are required. It is also used in a variety of industrial applications, such as UPS systems, power supplies, motors, electronic ballasts, lighting systems, and other electronic circuits. The LGG2W391MELB40 has a rated voltage of 400VDC and a capacitance range of 0.68 to 1.0 microfarads. Like all aluminum electrolytic capacitors, the construction of this capacitor consists of aluminum foil and an inserted electrolyte as the dielectric layer. The electrolyte, composed mainly of ethanol and water, acts as a conductor and provides the electric field for capacitance. Two aluminum foils are insulated with a thin paper or polyester film, and the separator acts as the dielectric.The working principle of the LGG2W391MELB40 is similar to other types of aluminum electrolytic capacitors. When a DC voltage is applied across the capacitor, an electric field will be created in the electrolyte and electrochemical deposition will occur on the aluminum foils. This electrochemical deposition will form an oxide layer on the surface of the aluminum foils, which acts as the dielectric for the capacitor. The electrochemical deposition will also increase the size of the capacitor\'s electrodes and form a larger surface area balanced with the electrolyte.The capacitance of the LGG2W391MELB40 aluminum electrolytic capacitor is dependent upon the surface area and thickness of the metal foils and electrochemical deposition. The ESR of the capacitor increases with an increase in temperature, so this capacitor has an operating temperature range of -40°C to 125°C. It has an excellent life expectancy, with a product life of up to 2000 hours at 105°C and ambient humidity.The LGG2W391MELB40 aluminum electrolytic capacitor is suitable for a wide range of applications due to its excellent voltage handling capability, long life expectancy, and low ESR. It can be used in power supplies, instrumentation, UPS systems, electronic ballasts, motors, lighting systems, and other electronic circuits. This makes it a popular choice in all types of electronics, both commercial and industrial.

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