ALF40C123DC040

Ratings:	--
Package / Case:	Radial, Can - Snap-In - 4 Lead
Mounting Type:	Through Hole, Press-Fit
Surface Mount Land Size:	--
Height - Seated (Max):	1.457" (37.00mm)
Size / Dimension:	1.378" Dia (35.00mm)
Lead Spacing:	0.886" (22.50mm)
Impedance:	106 mOhms
Ripple Current @ High Frequency:	3.08A @ 10kHz
Ripple Current @ Low Frequency:	2.77A @ 100Hz
Applications:	General Purpose
Series:	ALF40
Polarization:	Polar
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	5000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	121 mOhm @ 100Hz
Voltage - Rated:	40V
Tolerance:	±20%
Capacitance:	12000µF
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are widely used in electric and electronic equipment. They have several important characteristics that make them optimal for use in this market. The most important advantages are their large capacitance, low equivalent series resistance (ESR), long-term reliability, and low cost. This article will discuss the application field and working principle of ALF40C123DC040, a type of aluminum electrolytic capacitor.Aluminum electrolytic capacitors consist of an anode, composed of aluminum foil with a special treated coating, a cathode, usually composed of a metal oxide layer, and an electrolyte. The anode is rolled into a cylinder and placed into a cylindrical can. On the inner surface of the anode is a porous layer that serves to hold the electrolyte. The ends of the capacitor are sealed with a metal plate and gasket.The ALF40C123DC040 is a general purpose aluminum electrolytic capacitor and is widely used in consumer electronics, medical equipment, communications equipment, power supplies, and automotive electronics. It has a low capacitance tolerance of 10%, long-term reliability, and a wide temperature range. The capacitance value of the ALF40C123DC040 ranges from 20 to 47µF, and its rated ripple current is 6.3A.The functioning of the ALF40C123DC040 is based on a few basic principles. First, when an electrical current flows through the electrodes of the capacitor, the current will cause the oxide layer on the cathode to form and deposit ions. These ions will then form an electrical double layer on the electrode surface, resulting in an increase in capacitance. This process is known as the “dielectric charging effect.” Second, the oxide layer on the cathode will also act as a barrier to prevent the depletion of electrolyte solution from the surface of the anode. This reduces the rate of electrolyte loss and extends the capacitor’s lifetime. In order to ensure the best performance of the ALF40C123DC040, a few precautions must be taken. The capacitor should not be exposed to temperatures above 125°C, as this may damage the capacitor. Also, it is important to take care to ensure the capacitor does not suffer from voltage spikes or surges. Finally, the capacitor should be mounted in a well-ventilated area with plenty of air circulation.The ALF40C123DC040 is an invaluable component in many types of electronic devices and provides outstanding performance when handled with care. It is an effective and low cost capacitor that is reliable and capable of lasting for extended periods of time. These advantages make it an ideal choice for a wide range of applications.

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