URS1J470MPD

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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is a type of capacitor that uses an electrolyte to store electric charge. It also has a very high capacitance compared to other types of capacitors. It generally consists of two aluminum foils separated by a paper impregnated with an electrolyte that acts as the dielectric. These components are usually encased in plastic. Aluminum electrolytic capacitors are commonly used in circuits where higher capacitance is needed, such as in power supplies, high-frequency switching applications, and audio applications.

One such aluminum electrolytic capacitor is the URS1J470MPD. This variable-capacitance diode is a surface mount aluminum electrolytic capacitor that is designed for use in low power applications such as power supply, mobile phone, and automotive electronics. The URS1J470MPD is a capacitance trimming device with an easily configurable capacitance from 0.47 μF to 47 μF. It is available in an EIA 0402 package and is rated for a maximum operating temperature of 125°C.

Application Field

The URS1J470MPD is ideal for use in low power applications as it offers a high capacitance density, low ESR and low leakage current. It is ideal for use in power supply and electronic equipment that require good voltage and current characteristics, such as mobile phones, and automotive electronics. Moreover, these capacitors offer the benefit of an ultra-small and lightweight package, allowing them to be easily integrated into multiple applications.

Working Principle

The working principle of an aluminum electrolytic capacitor is essentially the same as all other capacitors, where electrical energy is stored in an electric field. However, the electric field created by an aluminum electrolytic capacitor is much stronger than that of other types, allowing it to store more energy. This is due to the electrolyte and paper found in the construction of these capacitors. The electrolyte, known as the dielectric, allows for a much higher electric field strength compared to the paper that is used in other types of capacitors. Basically, the higher the electric field, the greater amount of capacitance achieved.

The URS1J470MPD features a tilted tantalum plate electrode that is designed to allow trimming of the capacitance by adjusting the metal plates. The metal plate can be adjusted by applying a current to the device. The higher the applied current, the greater the degree of tilting, thus resulting in an increased capacitance. Furthermore, the device has an extra layer of protection against overload as it has an overvoltage protection circuit to prevent the voltage from exceeding the device’s rated voltage.

Overall, the URS1J470MPD is a great choice for applications that require a high degree of capacitance and need protection from overloads. The device’s small size and weight, high capacitance density, and low ESR make it perfect for use in low power applications.

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