E91F421VNT681MU50T

Series:	U91F
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	680µF
Tolerance:	±20%
Voltage - Rated:	420V
ESR (Equivalent Series Resistance):	141 mOhm @ 120Hz
Lifetime @ Temp.:	5000 Hrs @ 105°C
Operating Temperature:	-25°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	3.2A @ 120Hz
Ripple Current @ High Frequency:	4.576A @ 100kHz
Lead Spacing:	0.984" (25.00mm)
Size / Dimension:	1.772" Dia (45.00mm)
Height - Seated (Max):	2.067" (52.50mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can - Snap-In - 5 Lead

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Aluminium Electrolytic Capacitors Aluminium electrolytic capacitors are a type of capacitor which uses an aluminium oxide film as the dielectric, and traditionally relies on a voltage bias supplied by an electrolytic solution to allow a large capacitance to be obtained from a small metal foil area. Aluminium electrolytic capacitors typically have capacitance values ranging from 1uF up to 22,000uF.The construction of an aluminium electrolytic capacitor typically starts with a thin sheet of aluminium foil, which is then etched in order to increase its surface area and thus the capacitance. This aluminium foil is then anodised, which creates an insulating layer of aluminium oxide, and at the same time allows for an external voltage to be applied, thus increasing the capacitance further. The anodised aluminium foil is wound with paper or plastic to create a cylindrical shape, and a second sheet of aluminium foil is then placed on top of this. Finally, the stack is impregnated with electrolyte, such as a mixture of boric acid and ammonium borate, and sealed in a metal casing.In application, aluminium electrolytic capacitors are used as filters, surge suppression devices, as energy storage components, and in power supply decoupling, among other uses. They are also used to provide high value densities for a given amount of space. This makes them useful for applications in which high capacitance is required but limited space is available.PJIL91F421VNT681MU50T is a type of aluminium electrolytic capacitor, specifically designed for use in switch power supplies. Its major benefits include high temperature stability, low stray inductance, low impedance and high ripple current capability. It operates on an electrostatic principle, with a voltage applied across the dielectric, which then imparts an electric field and thus a capacitance. This capacitance is then determined by the thickness of the insulating aluminium oxide layer, which in turn is related to the voltage applied.The PJIL91F421VNT681MU50T has a number of electrical parameters which should be taken into consideration when selecting for use in an application. These parameters include its capacitance, voltage rating, temperature range, life expectancy, leakage current, equivalent series resistance (ESR), and equivalent series inductance (ESL). Depending on the application, it can also be provided in multiple different sizes for optimum space efficiency.In summary, aluminium electrolytic capacitors are a type of capacitor which use an aluminium oxide film as the dielectric, thus allowing for a very high capacitance in a small space. The PJIL91F421VNT681MU50T is a specific type of aluminium electrolytic capacitor designed specifically for switch power supplies, and its electrical parameters should be considered prior to use. As its advantages include high temperature stability, low stray inductance, low impedance and high current capability, it is well suited to applications in a variety of industries.

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