UPA1E391MPD1TD Capacitors

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Aluminum Electrolytic Capacitors

Aluminum Electrolytic Capacitors are one of the most common types of capacitors. The UPA1E391MPD1TD is a type of aluminum electrolytic capacitor primarily used for a wide range of applications due to its ability to store high amounts of energy. They are available in two distinct configurations, radial and axial. They are constructed in a cylindrical shape and packed with a cylindrically shaped aluminum foil that is rolled and impregnated with a dielectric electrolyte solution. The Aluminum foil acts as one of the plates of the capacitor while the electrolyte solution is used as a dielectric material between the plates.

Their construction and design allow them to be used in a variety of applications. Examples include being used as charge or bypass capacitors in power supplies, as power back-up capacitors in automotive engine start-up systems, and as input capacitors for amplifiers. They are also commonly used for noise suppression, high-frequency application, and pulse current. They have a relatively low internal resistance and good high-frequency response thanks to their low equivalent series resistance.

The UPA1E391MPD1TD has a capacitor of 47μF for its rated working voltage of 16 volts. It has a ripple current rating of 800mA making it ideal for applications with relatively high ripple current. The capacitance tolerance is +/-20%, delving efficiency of 85%, and its life expectancy is up to 3000 hours. It has a height of 7.9mm and an outside diameter of 9.5mm. The capacitor is made of aluminum electrolyte electrostatically insulated by anodized aluminum foil or epoxy resin. It has a lead pitch of 5.08mm and its operating temperature range is between -20 to +85 degrees Celsius.

The UPA1E391MPD1TD\'s working principle is based on the principle of electrostatics, which states that an electric field is generated when either charge is static or static electric fields persist when there is a separation of charges. A capacitor is a device that works on this principle; it is used to store energy in this electric field created by the separation of charges. In the UPA1E391MPD1TD, the electric field is stored between two thin aluminum foils. The foils are separated by a thin layer of dielectric material, which prevents the electric current from flowing directly through the composite but still allows for an electric field to be formed.

The aluminum electrolyte capacitors’ capacitance is affected by several factors such as temperature, voltage, and frequency. As the temperature increases, the capacitor’s capacity decreases. The same applies for increasing voltage and frequency. There is also a decrease in the capacitor’s overall life expectancy with increasing temperature and voltage ratings. Despite this, aluminum electrolyte capacitors are still a preferred choice due to their low cost, high reliability, and their ease of installation.

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