APXA4R0ARA221MH70G

Series:	NPCAP™-PXA
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymer
Capacitance:	220µF
Tolerance:	±20%
Voltage - Rated:	4V
ESR (Equivalent Series Resistance):	25 mOhm
Lifetime @ Temp.:	15000 Hrs @ 105°C
Operating Temperature:	-55°C ~ 105°C
Ratings:	--
Applications:	General Purpose
Ripple Current @ High Frequency:	3.02A @ 100kHz
Lead Spacing:	--
Size / Dimension:	0.315" Dia (8.00mm)
Height - Seated (Max):	0.264" (6.70mm)
Surface Mount Land Size:	0.327" L x 0.327" W (8.30mm x 8.30mm)
Mounting Type:	Surface Mount
Package / Case:	Radial, Can - SMD

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Aluminum - polymer capacitors (APXA4R0ARA221MH70G) have become indispensable components in many electrical and electronic devices in the recent years. They are used to increase the efficiency of power supplies and also to reduce their size and weight. The capacitors have come a long way since their initial introduction. In this article, we will be discussing the application field and working principle of the APXA4R0ARA221MH70G aluminum-polymer capacitors.Aluminum-polymer capacitors are widely used in various industries, including the military and aerospace, automotive, industrial electronics, medical, and renewable energy sectors. Their low ESR and high capacitance make them very suitable for applications such as in power supplies and LED lighting. In automobiles, they are often used to provide power to heated rearview mirrors, climate control systems, and the like. They have also been implemented into the powertrain of some vehicles, allowing for improved fuel economy.These capacitors are also used in the military and aerospace industries for a variety of reasons. One is their EMC compatibility; this makes them suitable for use in harsh high-voltage environments, such as on aircraft or submarines. Furthermore, they are used in the military and aerospace due to their ruggedness and small size, enabling very compact designs that are able to be deployed in difficult environments. Finally, these capacitors have very good energy efficiency due to their high dielectric constants, which allows them to be used in short-term energy storage devices.In industrial electronics, they are used in power supplies, motor drives, UPS systems, and more. Due to their high temperature and voltage stability, they can also be used in HVAC systems, medical devices, and solar power applications. Finally, due to their inherently low ESR, as well as their cost-effectiveness, they are frequently used in renewable energy storage systems, including wind and solar applications.The working principle of the aluminum-polymer capacitors is fairly straightforward. Like other capacitors, they are composed of two conductors separated by a dielectric material. In the case of an aluminum-polymer capacitor, the dielectric material is a layer of polymer film, which is composed of an aluminum oxide powder and an organic material, such as a polyvinylidene fluoride (PVDF).When a voltage is applied, electrons are accumulated on the surface of the aluminum oxide layer and the PVDF layer, creating an electric field between them. This electric field stores energy in between the two layers. When the applied voltage is removed, the electrons are released and the capacitor discharges.The dielectric constant of the polymer layer is significantly higher than that of other dielectric materials, meaning it can store more charge for a given size and voltage. This gives aluminum-polymer capacitors their high capacitance and low ESR characteristics. Furthermore, the composition of the aluminum oxide layer provides a high-temp, low-leakage dielectric surface, giving them good stability and reliability when used in high-voltage and high-temperature applications.In conclusion, the APXA4R0ARA221MH70G aluminum-polymer capacitor is a versatile component that can be used in a wide variety of applications. Its high dielectric constant, low ESR, and high temperature stability make it suitable for use in the military and aerospace, automobile, industrial electronics, medical, and renewable energy sectors. Its working principle is based on the creation of an electric field between two conductors, separated by a thin layer of polymer. This allows for the efficient storage of energy and makes the APXA4R0ARA221MH70G an ideal choice for a wide variety of applications.

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