UMP1V4R7MDD1TE

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Aluminum electrolytic capacitors are widely used in many applications due to their large capacitance values and low leakage. Of these, the UMP1V4R7MDD1TE represents a particularly popular variety of electrolytic capacitor with many advantages. This article will discuss the application filed and working principles of these capacitors.

Application Field

Aluminum electrolytic capacitors are used in a variety of applications, including in audio and video circuits. The UMP1V4R7MDD1TE capacitor is particularly suited to use in circuit designs with high-fidelity sound and video playback. This is because it features a low ESR (Equivalent Series Resistance) and a high ripple-current capability, both of which are important to ensure good sound and video playback.

In addition, these capacitors are used in automotive applications, such as ignition and start-stop systems, due to their excellent durability and robust construction. The UMP1V4R7MDD1TE capacitor is specifically designed for automotive use, featuring a temperature rating of up to 105°C and a long-term load life of 2000 hours.

Furthermore, the UMP1V4R7MDD1TE capacitor can also be used to construct power supplies and other applications where high ripple current and low ESR is needed. It stands up well to frequent switching cycles and start-up and can even filter electromagnetic interference (EMI) which could upset power supplies or cause damage to circuits.

Working Principle

Aluminum electrolytic capacitors are based on an ionic mechanism. The construction of these capacitors consists of two electrodes that are immersed in an electrolyte solution. The electrodes are usually made of aluminum foil and a layer of oxide is formed on them due to the electrolyte solution. This oxide layer acts as a dielectric material which stores the electrical charge in the capacitor.

The UMP1V4R7MDD1TE capacitor has a voltage rating of 25V and a capacitance range varying from 1.2 to 3.3 mF. The anode consists of a thick layer of aluminum oxide dielectric which is formed due to the electrolyte solution and the cathode is an aluminum foil electrode. The capacitance is determined mainly by the area of the aluminum oxide layer and the distance between the aluminum oxide and the aluminum foil electrodes.

In order to maintain a stable capacitance, the UMP1V4R7MDD1TE capacitor is also equipped with a terminal cathode. The cathode is usually connected to an external terminal and in case of a reversal of the applied voltage, it will cause the current in the capacitor to be squashed or diverted to the external terminal. This significantly reduces the risk of damage and allows the capacitor to be used in high voltage circuits.

Conclusion

The UMP1V4R7MDD1TE capacitor is a reliable and durable aluminum electrolytic capacitor, designed for a variety of applications. It features a low ESR and high ripple-current capability, making it ideal for audio-video and automotive applications. It also offers excellent protection against reverse voltages, due to its terminal cathode. Its large capacitance value and long-term load life of 2000 hours also make it suitable for use in power supplies and other applications.

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