UPJ0J121MDD

Polarization:	Polar
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	0.472" (12.00mm)
Size / Dimension:	0.197" Dia (5.00mm)
Lead Spacing:	0.079" (2.00mm)
Impedance:	1.1 Ohms
Ripple Current @ High Frequency:	175mA @ 10kHz
Ripple Current @ Low Frequency:	115mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	UPJ
Operating Temperature:	-55°C ~ 105°C
Lifetime @ Temp.:	2000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	6.3V
Tolerance:	±20%
Capacitance:	120µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Aluminum electrolytic capacitors are electrical components that are able to store electric charge and release it when needed. In industry and other applications, they are essential components for a wide range of electronic circuits, providing capacitance as a source of energy. This article seeks to explain the field of application and the working principle of the UPJ0J121MDD aluminum electrolytic capacitors.

Analysis

Field of Application

The UPJ0J121MDD aluminum electrolytic capacitor is designed for applications in a variety of industries, including telecommunications, computer, industrial, power suppliers and consumer products. Among its features, it has a low ESR (Equivalent Series Resistance) value and a high capacitance value. Due to its low ESR value, it is ideal for applications in high current or high switching frequency environments, because it helps reduce power dissipation of the circuit. As well, its high capacitance value makes it suitable for applications with high energy storage needs, where low ESR values are unnecessary.This type of capacitor is often used in switch mode power supplies (SMPS) where a low ESR greatly improves efficiency and reduces size. Apart from that, they are also well suited for use in commercial audio devices, filter circuits, regulators, active amplifiers, and digital signal processing (DSP) applications.

Working Principle

The UPJ0J121MDD aluminum electrolytic capacitor uses aluminum oxide as its dielectric material. When a positive voltage is applied to the capacitor, electrons from the aluminum layer are drawn towards the positive pole and, as a result, the amount of charge on the aluminum layer increases significantly, reducing the width of the oxide layer between the electrodes. This significantly reduces the capacitance of the capacitor. Also, as the capacitor continues to be charged, its capacitance continuously decreases and the voltage at which it is charged also increases.When the capacitor is discharged, the electrons return to the aluminum layer and the oxide layer gets thicker once again. This dramatically increases the capacitance of the UPJ0J121MDD capacitor. This is known as charging and discharging of an electrolytic capacitor. During the charging and discharging process, the capacitor\'s capacitance is continuously changing, making it an ideal component for applications where variable capacitance is needed.

Conclusion

The UPJ0J121MDD aluminum electrolytic capacitor is a very versatile component in the electrical and electronic industry. Its low ESR and high capacitance values make it ideal for high energy storage and high current applications. It is an essential part in many commercial audio devices, filter circuits, and other electronic components. The charging and discharging cycle of this type of capacitor is very important, as it allows the capacitor to continuously change its capacitance and provide the necessary energy to the connected circuits.

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