KMG35VB221M8X11LL

Series:	KMG
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Capacitance:	220µF
Tolerance:	±20%
Voltage - Rated:	35V
ESR (Equivalent Series Resistance):	1.055 Ohm @ 120Hz
Lifetime @ Temp.:	1000 Hrs @ 105°C
Operating Temperature:	-55°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	270mA @ 120Hz
Ripple Current @ High Frequency:	405mA @ 100kHz
Lead Spacing:	0.138" (3.50mm)
Size / Dimension:	0.315" Dia (8.00mm)
Height - Seated (Max):	0.453" (11.50mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can

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Aluminum electrolytic capacitors are an important type of passive components among capacitors. They play an important role in modern electronic equipment, which are characterized by large capacity, high stability and long life. The KMG35VB221M8X11LL belongs to the aluminum electrolytic capacitor, and its application field and working principle should be understood to better ensure its use and storage.

Application Field

The KMG35VB221M8X11LL aluminum electrolytic capacitor is specifically designed for high-power DC power supply circuits. Its main feature is that it at high frequencies, it has very low ESR (equivalent series resistance) and offers excellent performance in high-end audio positioning. With its high ripple current capability, it is also suitable for line filtering, and can be used in switching power supplies and frequency-adjustable power supplies. This capacitor also has wide applications in the digital signal processing system, such as analog-to-digital conversion of voice signals, as well as the applications of telephone system, satellite systems and military communication application.

Working Principle

Aluminum electrolytic capacitors, whose structure is composed of two aluminum foils outside an electrolyte-saturated aluminum oxide membrane as a dielectric, use the phenomenon of polarization of electrolytes to achieve capacitance. When a voltage is applied between the two sides of the electrolyte, the positive and negative ions of the electrolyte will be polarized diffuse and move to the plate of the opposite polarity, these ions will form a "fuzzy" polarized electric field between the plates and play the role of the capacitor. The capacitance of the KMG35VB221M8X11LL aluminum electrolytic capacitor is related to the surface area of the two electrodes, the thickness of the membrane, the electrodes’ shape and the type of electrolyte.Its characteristics vary with the outer electrode structure, electrolyte type and capacitance level. Generally, aluminum electrolytic capacitors have high working voltage, large capacity and different temperature coefficient, which can be used to filter or bypass signals in AC and DC circuits.

Advantages

The biggest advantage of using the KMG35VB221M8X11LL aluminum electrolytic capacitor is that it can obtain very large capacity and large resistance under rated voltage, making it more suitable for high-current circuit applications than other types of capacitors. Aluminum electrolytic capacitors also possess excellent performance stability, allowing them to function for a long time and even carry out operations in extreme environmental conditions.It also has good self-healing properties;; when an overcurrent failure occurs, the oxide layer on the surface of the anode core can form a “Schottky barrier”, which can protect the capacitor and avoid damage. Aluminum electrolytic capacitors are also suitable for applications in large power AC and DC circuits.

Limitations

Aluminum electrolytic capacitors are limited to AC voltage use. The electric breakdown voltage is low and, if exceeded, will produce excessive leakage current. Its temperature coefficient is large, which can cause capacitance changes when the operating temperature changes, and the temperature drop caused by overload will also cause an increase in ESR and a decrease in capacitance.The KMG35VB221M8X11LL aluminum electrolytic capacitor is also easily affected by corrosion and oxidation. If stored in an environment with poor air quality and humidity, it will have a short life and cause problems in the recording device. In addition, this capacitor features a large volume and a fragile structure, so it is necessary to be extra careful when handling it.

Maintenance and Storage

The KMG35VB221M8X11LL aluminum electrolytic capacitors need to be stored in a clean, dry, low temperature and dark environment. It should be avoided from being exposed to direct sunlight or other sources of light due to poor thermal conductivity of aluminum. When moving, avoid violent external force or strong vibration/impact to prevent the exterior of the capacitor from being distorted or damaged.It is also important to keep the temperature and humidity stable and non-corrosive in the storage environment. Before use, it is necessary to check if there is a phenomenon such as burst nucleus, short circuit or excessive leakage current. Whenever necessary, a professional use the dedicated tester for capacitors, to measure the capacitance, ESR and insulation resistance of the product. Even after long-term storage, it needs to be tested to confirm its normal use.

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