UHW1V391MPD1TD

Ratings:	--
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	0.689" (17.50mm)
Size / Dimension:	0.394" Dia (10.00mm)
Lead Spacing:	0.197" (5.00mm)
Ripple Current @ High Frequency:	2A @ 100kHz
Ripple Current @ Low Frequency:	1A @ 120Hz
Applications:	General Purpose
Series:	UHW
Polarization:	Polar
Operating Temperature:	-40°C ~ 105°C
Lifetime @ Temp.:	10000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	35V
Tolerance:	±20%
Capacitance:	390µF
Part Status:	Active

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Introduction to Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are among the most widely used components in electronics. They are used in a wide range of applications due to their low cost, small size, and high capacitance. These capacitors are typically small cylindrical components that are easily recognizable by their housing and the two electrical terminals extending from them.The UHW1V391MPD1TD is an aluminum electrolytic capacitor. It is used in applications that require a high capacitance in a small form factor. These capacitors are often used in electronic circuits where the capacitance needs to be adjusted or monitored in reaction to a specific input.

Construction of Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is composed of several components. The two main electrical components are the aluminum foils, which act as either the anode or cathode, and a dielectric layer, which separates the two foils. The electrolyte acts as the medium of conduction, and the aluminum foils are sprayed with an oxide film. This oxide layer helps increase the electrical capacitance and is necessary for the capacitor to function correctly.At the bottom of the capacitor is a terminal, which facilitates connection between the two electrical components. This terminal also contains a sealant that helps resist moisture and corrosion. At the top of the capacitor is a venting port which helps to dissipate heat.

Application Field and Working Principle of the UHW1V391MPD1TD

The UHW1V391MPD1TD aluminum electrolytic capacitor is used in applications such as DC-DC converters, voltage regulators, and motor speed control. With these applications, the voltage applied to the capacitor needs to be changed or monitored in response to an input.The working principle of this capacitor is based on its construction. Applying a voltage to the capacitor causes the electrical field between the two foil layers to be altered. This change alters the capacitance, which in turn causes the capacitance of the circuit to be modified. The capacitance of the capacitor therefore allows for adjustments in the current flow within the circuit.

Advantages and Disadvantages of Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors offer several advantages over other types of capacitors. They are relatively inexpensive, compact, and can hold high values of capacitance. The capacitance of an aluminum electrolytic capacitor can vary significantly within a range, allowing for great versatility in circuits.However, aluminum electrolytic capacitors have several disadvantages as well. Typically, they do not last very long in comparison to other types of capacitors, and their capacitance decreases with age. Also, their capacitance decreases as temperature rises, meaning that they are not suitable for high temperature applications.

Conclusion

Aluminum electrolytic capacitors are among the most widely used components in the electronics industry. The UHW1V391MPD1TD is an example of an aluminum electrolytic capacitor that has a high capacitance in a small form factor. These capacitors are used in applications such as DC-DC converters, voltage regulators, and motor speed control. While they offer several advantages such as cost and size, they have limited temperature and age tolerance.

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