UPJ0J821MPD6

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Aluminum electrolytic capacitors are a type of capacitor that uses aluminum oxide as a dielectric material and have the most capacitance of all types of capacitors in terms of their low profile and small size. The UPJ0J821MPD6 aluminum electrolytic capacitor is a surface mount radial lead type, with a rated capacitance range between 0.47 and 470 microfarads (μF) for a voltage of 16 volts, with a rated ripple current of 0.65 amperes, a rated temperature of -40°C to 85°C, and a rated life of 1000 hours.

Application Field

The UPJ0J821MPD6 aluminum electrolytic capacitor has a wide range of applications, including:

• Filtering and bypassing applications in power converters, DC/DC converters, audio-visual equipment, and other electronic devices.
• Snubber circuits where a high-frequency current is needed.
• Suppression/decoupling of high-frequency signals.
• Bypass/filter applications of switching power supplies.

Working Principle

An aluminum electrolytic capacitor is a type of capacitor that utilizes an electrolytic solution as the dielectric material between two aluminum electrodes. The aluminum is a very thin foil with almost perfect surface contact which serves as a current conductor. The capacitance value is achieved by combining two sets of electrodes, separated by an electrolyte-soaked paper. The combination of an anode foil, electrolyte and cathode foil is referred to as a “roll”.

At the anode end of the capacitor, the aluminum foil is coated with a very thin layer of aluminum oxide. This forms the dielectric for the capacitor. When a voltage is applied to the aluminum oxide coating, it forms a barrier between the two layers, preventing current from passing through the cells. The electric field that is created by the oxide layer between the anode and cathode of the capacitor allows a capacitance effect to be created, resulting in significantly increased capacitance values.

The UPJ0J821MPD6 aluminum electrolytic capacitor utilizes an advanced technology that provides improved volumetric efficiency, high temperature stability and extended life. The combination of an aluminum oxide layer, an anode foil, and an electrolyte makes this part more reliable and efficient than other types of capacitors in terms of the volume it can hold, the temperature at which it can work, and its longevity.

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