35ZLK220M8X16

Polarization:	Polar
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	0.689" (17.50mm)
Size / Dimension:	0.315" Dia (8.00mm)
Lead Spacing:	0.138" (3.50mm)
Impedance:	59 mOhms
Ripple Current @ High Frequency:	2.05A @ 100kHz
Ripple Current @ Low Frequency:	615mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	ZLK
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	4000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	35V
Tolerance:	±20%
Capacitance:	220µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, usually referred to as simply electrolytic capacitors or just electrolytics, are capacitors whose anode + terminal is made of a metal that is coated with an insulating oxide layer (the aluminum oxide layer). They are the most widely used type of capacitor due to their low cost and high capacitance per unit volume. The most common type of electrolytic capacitor is the 35ZLK220M8X16, which has a capacitance of 220 microfarads and a working voltage of 16 volts.

Application Field

Due to their high capacitance and low cost, electrolytic capacitors are widely used in a variety of electrical applications. In power supplies, they are often used to smooth the input voltage and filter out any high-frequency noise or ripple. They are also used in radio frequency (RF) applications, such as broadcast transmitters and filters, as well as in the coupling of multiple stages of amplifier circuits.In audio applications, electrolytic capacitors are often used to couple the output signal from one stage of amplification to another, or in crossover circuits to divide the signal into different frequency ranges. They can also be used in speaker crossover networks, to reduce the signal level of higher frequency sound components in order to protect the speakers from distortion. Additionally, electrolytic capacitors can also be used in timing circuits, such as in watches and timers.

Working Principle

Electrolytic capacitors work by utilizing a thin oxide layer (the aluminum oxide layer) which acts as an electrolyte and separator between two metal plates (the anode and the cathode). When a voltage is applied between the two plates, the oxide layer acts as an insulator which stores charge between the two plates, thus forming a capacitor.The capacitance of an electrolytic capacitor is determined by the metallic surface area of the anode as well as the thickness and dielectric strength of the oxide layer. The most common type of oxide layer used is formed from anodized aluminum, which is very thin and has a very high dielectric strength. This high dielectric strength allows for a very high capacitance in a relatively small volume, which is why electrolytic capacitors are so widely used.In addition to the oxide layer, an electrolytic capacitor also requires an electrolyte in order to store charge. This electrolyte is typically a liquid electrolyte or a gel electrolyte, depending on the type of capacitor being used. Gel electrolyte capacitors generally have a longer lifetime than liquid electrolyte capacitors.

Conclusion

Electrolytic capacitors, specifically the 35ZLK220M8X16, are one of the most widely used types of capacitors due to their high capacitance per unit volume and low cost. These capacitors are used in a wide variety of electrical applications, including power supplies, RF applications, audio applications, and timing circuits. The working principle of electrolytic capacitors involves the use of a thin oxide layer which acts as an electrolyte and separator between two metal plates, and the capacitance is determined by the metallic surface area of the anode, the thickness of the oxide layer, and the dielectric strength of the oxide layer.

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