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:	0.866" Dia (22.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	1.363A @ 10kHz
Ripple Current @ Low Frequency:	1.09A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	LMB
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	3000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	487.607 mOhm @ 120Hz
Voltage - Rated:	100V
Tolerance:	±20%
Capacitance:	680µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Introduction

Aluminum Electrolytic Capacitors (AECs) are electrical components used to store electric charge and to act as a filter for AC in power supplies. AECs are usually constructed by encapsulating a wound strip of aluminum foil in a waterproof material, such as epoxy resin or polyester. The other side of the capacitor is contact with a conductive liquid, such as electrolyte, which provides a negative charge. AECs are polarised, meaning current can only flow in one direction, and as such are often used in applications where DC current is present. AECs are also used to store electric energy, and are commonly used in applications such as DC-DC converters, motor drives, and power supplies.

687LMB100M2BC Application Field and Working Principle

The 687LMB100M2BC is an advanced type of AEC, designed to provide a low side ESR with low dissipation. This makes it suitable for high ripple current applications, such as those found in power supplies and other industrial applications.The 687LMB100M2BC is a polarised capacitor rated at 100μF, with an operational voltage of 100V. It is rated for operation at a temperature range of –25℃ to +105℃, and has a minimum life expectancy of 5,000 hours.The working principle of the 687LMB100M2BC AEC is based on Faraday’s Law, which states that the amount of charge stored is proportional to the potential difference across its terminals and to the capacitance of the device. An external voltage is applied across the capacitor, which causes a build up of charge on the free-moving electrons in the wounded aluminum strip. This creates an electric field causing the electrons to distribute themselves evenly throughout the capacitor. When a current passes through the terminals, electrons are exchanged from one plate to another, creating an electric potential across the plates. The amount of charge stored by the capacitor is determined by the potential difference, the capacitance of the capacitor, and the total amount of time the capacitor is exposed to the applied voltage.

Conclusion

The 687LMB100M2BC is an advanced type of AEC, designed for high ripple current applications. It can withstand temperatures of up to +105℃ and has a long life expectancy of up to 5,000 hours. Its working principle is based on Faraday’s Law, whereby the current will flow between the plates in response to a potential difference. As such, it is ideally suited for high ripple current applications, as its low ESR and low dissipation characteristics make it an excellent choice for maintaining voltage levels and filtering AC in power systems.

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