380LX221M160H202

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	0.866" (22.00mm)
Size / Dimension:	0.866" Dia (22.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	1.1A @ 20kHz
Ripple Current @ Low Frequency:	800mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	380LX
Operating Temperature:	-40°C ~ 85°C
Lifetime @ Temp.:	3000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	1 Ohm
Voltage - Rated:	160V
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 are capacitors in which the dielectric is an aluminum oxide that forms a very thin and non-uniform layer on the surface of the aluminum foil. They have the highest capacitance per unit volume of any type of capacitor and are small in size. The aluminum electrolytic capacitor is composed of two firing aluminum foils which are mutually separated by a thin oxidized insulator film.The number “380LX221M160H202” indicates the capacitor belongs to the voltage rating of 380 volts, the frequency range of 60Hz to 60kHz, the ripple current rating of 160A, the capacitance of 221μF and the capacitance tolerance of -20%/+20%.This type of capacitor is widely used in electrical and electronic circuits due to its wide temperature range, simple structure, low cost, good reliability, stable operation and relatively large capacitance. Due to the high capacitance, they are often used in, power supplies, motor drives, snubber circuits, resonant circuits, input & output filters, electrical motor, speed and torque control circuits.Due to the dielectric of the aluminum electrolytic capacitor, it must be connected in one specific way with respect to voltage and current. If connected incorrectly, it may damage the capacitor as well as the circuit it is connected to. The negative lead is usually indicated by a stripe on the side of the capacitor with a symbol such as the minus sign (-) or minus triangle (Δ). The positive lead is also indicated by a stripe on the side of the capacitor with a symbol such as the plus sign (+) or plus triangle (∇).The working principle of aluminum electrolytic capacitors is based on a thin oxide dielectric layer between two conductive plates. When a positive voltage is applied to one plate and a negative voltage is applied to the other, negative ionic charges in the dielectric material move toward the positive plate. This build-up of negative ions forms an electric field across the dielectric that aids the electrostatic field of the plate so that a higher amount of electric charge can be stored.As the voltage approaches the rating of the capacitor, the dielectric starts to break down until it reaches a very thin state, at which point the plate loses its ability to contain the electric charge and it discharges. This phenomenon is called “electrolytic breakdown” and is the primary cause of failure in an aluminum electrolytic capacitor.The dielectric strength of the material holds an important role in an aluminum electrolytic capacitor, as it determines the voltage rating of the device. The higher the dielectric strength, the higher the voltage rating of the capacitor. This is why capacitors for higher voltage applications are constructed from materials with higher dielectric strengths.In summary, aluminum electrolytic capacitors are used widely in electrical and electronic circuits due to their wide temperature range, ease of construction, low cost, good reliability and relatively large capacitance. They are also highly susceptible to failure due to electrolytic breakdown and therefore must be used with caution. Their working principle and application are based on a thin oxide dielectric layer between two conductive plates and their voltage rating depends on the dielectric strength of the material.

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