KY50VB821M16X20LL

Series:	KY
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Capacitance:	820µF
Tolerance:	±20%
Voltage - Rated:	50V
ESR (Equivalent Series Resistance):	--
Lifetime @ Temp.:	10000 Hrs @ 105°C
Operating Temperature:	-40°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	1.326A @ 120Hz
Ripple Current @ High Frequency:	2.21A @ 100kHz
Impedance:	34 mOhms
Lead Spacing:	0.295" (7.50mm)
Size / Dimension:	0.630" Dia (16.00mm)
Height - Seated (Max):	0.787" (20.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can

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Aluminum Electrolytic Capacitors are widely used as energy storage capacitors in electronic circuits. This article focuses on KY50VB821M16X20LL, a type of aluminum electrolytic capacitor, and its application field and working principle.Aluminum electrolytic capacitors are components consisting of two aluminum plates and an electrolyte. The aluminum plates are separated by a thin dielectric layer composed of an oxide film, which serves as the capacitor\'s main capacitance component and provides the electric field carrying capacity. The electrolyte provides a conductive medium and supports electrical conduction between the two electrodes. The electrical conduction is enabled by ionizing the electrolyte, which reacts with the aluminum and forms the oxide dielectric layer.The oxide layer also has a high dielectric constant, which allows it to store energy for a longer period of time than other capacitors. This makes the aluminum electrolytic capacitor well suited for applications requiring a long energy storage period with high energy density and high capacitance.KY50VB821M16X20LL is an aluminum electrolytic capacitor with a high-voltage rating, and it is mainly used in power supplies, switching power supplies, and other circuits requiring high voltage ratings. This capacitor’s main characteristics include a maximum operating temperature of up to 105°C (221°F), a capacitance value of 8200 mF, a dielectric resistance of 2800 Ω, a leakage current of ≤ 0.01CV, and a ripple current of 2700 A. The KY50VB821M16X20LL boasts a tolerance of 20%, a lifetime of 5000 hours at 100°C (212°F).The working principle of the KY50VB821M16X20LL aluminum electrolytic capacitor is based on its electrical characteristics. This capacitor is able to store energy due to its high capacitance value, its dielectric resistance, and its design. Energy is stored temporarily in the capacitor when the voltage across its terminals exceeds the rated voltage given by the manufacturer, or when the current exceeds the maximum ripple current, and it is then discharged according to the capacitor\'s internal resistance.When the capacitor is connected in an alternating current circuit, AC currents will flow through it, and it will be charged and discharged according to the circuit\'s frequency. The capacitor charges when the voltage at the positive end is higher than the voltage at the negative end and it discharges when the voltage at the negative end is higher than the voltage at the positive end. This charging and discharging cycle is called a "charging–discharging cycle", and its frequency is determined by the surrounding circuit.In conclusion, the KY50VB821M16X20LL is a high voltage aluminum electrolytic capacitor, and it has a high capacitance value, a maximum operating temperature of up to 105°C (221°F), a capacitance value of 8200 mF, a dielectric resistance of 2800 Ω, a leakage current of ≤ 0.01CV, and a ripple current of 2700 A. It works by storing energy in the capacitor when the voltage across its terminals exceeds the rated value and by charging and discharging according to the surrounding circuit’s frequency. The capacitor can be used in power supplies, switching power supplies, and other circuits requiring high voltage ratings.

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