381LQ181M450H042

Voltage - Rated:	450V
ESR (Equivalent Series Resistance):	1.106 Ohm @ 120Hz
Lifetime @ Temp.:	2000 Hrs @ 105°C
Operating Temperature:	-25°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	1A @ 120Hz
Lead Spacing:	0.394" (10.00mm)
Size / Dimension:	0.866" Dia (22.00mm)
Height - Seated (Max):	1.654" (42.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can - Snap-In
Series:	381LQ
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	180µF
Tolerance:	±20%

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Introduction

Aluminum electrolytic capacitors, also referred to as wet electrolytic capacitors, are divided mainly into two categories: wet electrolytic capacitors and dry electrolytic capacitors. Aluminum electrolytic capacitors are characterized by their small volume, low equivalent series resistance, and large capacity. The anode of aluminum electrolytic capacitor is made from an aluminum foil with the oxide film on its surface, which acts as the dielectric layer. The cathode is the anode foil covered with an electrolyte, usually an organic solvent containing a supporting electrolyte.

381LQ181M450H042 Application Field and Working Principle

381LQ181M450H042 is a type of aluminum electrolytic capacitor. It has wide operating temperature range (-40°C ~ +85°C) and long-term full-load working life (5000 hours). Its typical application field range in consumer electronics, telecommunications, power systems, automotive, medical devices and others.The working principle of381LQ181M450H042 aluminum electrolytic capacitor is similar to other aluminum electrolytic capacitors. The oxide film formed on the oxide coated anode is used as the dielectric medium. The electrolyte acts as the catalyst for conducting electrons between layers. Electrolyte is adsorbed on the surface of the anode, and if there is voltage on the capacitor, ions will be generated. The ions will induce the corresponding number of positive and negative charges on the anode and cathode structures. This will form potential gradient and then set up the electric field intensity inside the capacitor. For this reason, it can be used to store the electric energy within a certain scope. Under the angular frequency, the capacitance of capacitor will increase while the dissipation factor will be decreased. As the temperature rises, the capacitance and dissipation factor of capacitor will also change.

Conclusion

381LQ181M450H042 aluminum electrolytic capacitors are widely used in many electronic products due to their small size, low equivalent series resistance, and large capacity. By taking advantage of the electrolyte adsorbed on the surface of the aluminum foil and the formed polarization layer, this type of capacitor can create a potential giving it the capability to accurately and instantaneously store the electric energy within a much smaller space than other types of capacitors. Overall, the aluminum electrolytic capacitors, such as the 381LQ181M450H042, can be highly reliable and efficient, and can offer better performance overother types of capacitors in various applications.

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