MAL213665821E3

Series:	136 RVI
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	820µF
Tolerance:	±20%
Voltage - Rated:	16V
ESR (Equivalent Series Resistance):	--
Lifetime @ Temp.:	7000 Hrs @ 105°C
Operating Temperature:	-55°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	819mA @ 100Hz
Impedance:	52 mOhms
Lead Spacing:	0.197" (5.00mm)
Size / Dimension:	0.394" Dia (10.00mm)
Height - Seated (Max):	1.063" (27.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can

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Aluminum Electrolytic capacitors are a type of capacitor that uses two overlapping aluminum foils, which are separated by absorbent material that is impregnated with an electrolyte. The overlapping foils are separated by a dielectric material, generally a paper separator, and have polarizing electrodes that define a conducting plate. This structure allows the capacitor to store electric energy and produces a current in one direction that increases in magnitude depending on the applied voltage. When the applied voltage reaches a certain level, the capacitor can no longer store energy, and the capacitor is discharged.
MAL213665821E3 is a common type of aluminum electrolytic capacitor developed by many manufacturers and used for various applications. The most common use of this type of capacitor is in power supplies, as aluminum electrolytic capacitors offer a much higher capacitance than other types of capacitors, and due to their low equivalent series resistance (ESR), they are more efficient in ripple current applications.
Electrical equipment such as motors, transformers, power converters, inverters, and other equipment, often incorporate aluminum electrolytic capacitors. These components are used to help absorb the surge in current demand that occurs during switching or when starting an electric motor. They are also used to help reduce electromagnetic interference (EMI) by filtering out high-frequency noise.
In addition to power supplies, aluminum electrolytic capacitors also find applications in audio systems and other consumer electronics. This type of capacitor can be used to filter out high-frequency noise in audio systems or to provide power reserve capacity in regulated power supplies. In certain types of consumer electronics, such as digital cameras, these capacitors can be used to provide additional power during peak demand times.
In terms of working principle, the MAL213665821E3 is an aluminum electrolytic capacitor with a solid-foil anode, an absorbent material and a non-solid-foil cathode. This combination of components allows for the capacitor’s capacitance to be increased as voltage is applied. The aluminum electrolyte absorbs the electric current, creating a strong electrostatic field. This electrostatic field between the two foils forms the capacitor dielectric, allowing for electrical current to flow in one direction only.
The capacitor’s life expectancy is determined by the temperature rating of the electrolyte. As temperature rises, so does the capacitor’s internal resistance, limiting its ability to hold a charge. Additionally, too much current passing through the capacitor leads to heat buildup, which can also affect the capacitor’s life span. For optimal performance, aluminum electrolytic capacitors should not be subjected to temperatures higher than 85 Celsius.
To avoid accidents caused by over-voltage, the MAL213665821E3 is protected with a safety vent that allows the electrolyte gas to escape in case of over-voltage. Additionally, these capacitors can be manufactured with surge-absorbing characteristics to improve their performance in harsh environments with wide temperature fluctuations.
In conclusion, MAL213665821E3 is a common type of aluminum electrolytic capacitor used for a variety of applications due to its high capacitance and low equivalent series resistance. It produces a strong electrostatic field between two overlapping aluminum foils, and is protected from over-voltage with a safety vent. These capacitors can provide power reserve capacity, filter high-frequency noise and help reduce EMI, and should not be subjected to temperatures above 85 Celsius.

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