UPJ2A6R8MED1TA

Introduction

Aluminum Electrolytic Capacitors, represented by UPJ2A6R8MED1TA, are solid electrolytic capacitors with non-solid electrolytes. The non-solid electrolyte is mostly gel-like in consistency, and the "solid" component is actually an aluminum oxide film formed directly on the surface of the aluminum foil separator. Unlike solid tantalum capacitors with a manganese dioxide dielectric, these capacitors can achieve very high capacitance in a relatively compact size.

Application Field

Aluminum electrolytic capacitors are widely used in pulse load, high current supply, high frequency, and frequency dividing applications. Their main uses are in power supplies, audio amplifiers, and motor control. They are ideal for power supply noise filtering in any application, including power amplifiers and audio current sources. They provide high capacitance and low ESR in a compact form, allowing them to be used in a wide variety of signal conditioning and filtering applications, and for decoupling for power supply and other electronic components.Aluminum electrolytic capacitors are also ideal for high current or high power applications. Because they are often used in power amplifiers, they are invaluable for providing tight noise control in loud speakers and high-power audio amplifiers. Their superior current-handling ability makes them the perfect choice for any high-current application.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on Faraday’s law. This law states that the amount of charge stored in a capacitor is equal to the product of the capacitance and the applied voltage. Therefore, the higher the applied voltage, the greater the amount of charge stored in the capacitor.

The capacitance of an aluminum electrolytic capacitor is mainly determined by two factors: the size of the aluminum foil electrodes and the thickness of the aluminum oxide dielectric. The larger the area of the electrodes and the thinner the dielectric, the higher the capacitance. The effect of an applied voltage on the capacitance depends on the dielectric strength of the oxide film. When the applied voltage exceeds the dielectric strength of the oxide film, the capacitance of the capacitor decreases exponentially. This mechanism is called "voltage rating breakdown".

Conclusion

Aluminum electrolytic capacitors represent a distinct class of non-solid capacitors. They are widely used in a variety of pulse load, high current supply, high frequency, and frequency dividing applications, due to their high capacitance and low ESR in a compact form. The working principle of aluminum electrolytic capacitors is based on Faraday’s law, and mainly determined by the size of the aluminum foil electrodes and thickness of the aluminum oxide dielectric.