B43712A5109M000

Polarization:	Polar
Package / Case:	Radial, Can - Screw Terminals
Mounting Type:	Chassis Mount
Surface Mount Land Size:	--
Height - Seated (Max):	7.559" (192.00mm)
Size / Dimension:	3.543" Dia (90.00mm)
Lead Spacing:	1.248" (31.70mm)
Impedance:	20 mOhms
Ripple Current @ High Frequency:	2.56A @ 100kHz
Ripple Current @ Low Frequency:	25.8A @ 100Hz
Applications:	General Purpose
Ratings:	--
Series:	B43712
Operating Temperature:	-40°C ~ 85°C
Lifetime @ Temp.:	10000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	12 mOhm @ 100Hz
Voltage - Rated:	450V
Tolerance:	±20%
Capacitance:	10000µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor (AEL), also called an aluminum electrolytic, is a polarized capacitor in which the anode is made of an aluminum foil with an etched surface, covered, in recent years, by a thin dielectric film. The oxide layer on the aluminum wires acts as the dielectric while the electrolyte serves as the cathode. Additionally, the electrolyte provides stability to the capacitor, making it more stable than conventional plastic capacitors.
The B43712A5109M000 is a specific type of aluminum electrolytic capacitor widely used for power supplies, switch mode regulators, and LED drivers. This type of capacitor has a higher capacitance-temperature coefficient, allowing it to be used for applications requiring higher temperature correction and exceptional ripple current ratings.

Application Field

Aluminum electrolytic capacitors such as the B43712A5109M000 are mainly used in applications where a high Ripple Current is needed in order to provide a robust and reliable operation. These capacitors are typically used in specific SMPS (Switched-Mode Power Supplies) and other high-current power supplies. They are also utilized in applications where high switching frequencies are required, due to their better capacitance retention over a high frequency range.

Working Principle

When an electric field is applied across two metal plates (the anode and the cathode), the electric field produces a charge on the surface of the plates, which accumulates. This charge forms a depletion layer, which is responsible for the capacitance of the capacitor. In the case of aluminum electrolytic capacitors, the charge is created when an electrolyte, such as a potassium hydroxide solution, is added between the plates. This electrolyte reacts with the aluminum, creating an oxide layer, which serves as the dielectric.The capacitance of the B43712A5109M000 depends on the size of the plates and the distance between them. Since the plates are made of aluminum, they have a higher current rating than conventional plastic capacitors. Also, due to the large surface area of the capacitor plates, they have a larger capacitance than conventional plastic capacitors. The electrolyte ensures a stable capacitance over a wide temperature range, making the B43712A5109M000 suitable for applications that require a stable capacitance even at high temperatures.In conclusion, the B43712A5109M000 is a type of aluminum electrolytic capacitor with high capacitance values, low ESR, and highly stable capacitance retention over a wide temperature range. It is suitable for applications requiring high current ripple and high switching frequencies.

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