LGU2A182MELB

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Aluminum electrolytic capacitors, also known as e-caps, are the most commonly used capacitors in electronic systems. They are commonly used in applications such as power supplies, audio amplifiers, electrical filters, and voltage regulators. The LGU2A182MELB aluminum electrolytic capacitor is among the most popular models in this capacitor type.

Application Field

The LGU2A182MELB is an axial-leaded aluminum electrolytic capacitor. It is designed for use in applications such as low-voltage AC/DC power supplies, as well as portable equipment, lighting systems, and other electronics with similar power requirements. It has long-term stability and high electrical efficiency, making it suitable for use in many different environments.

The wide-operating environment of the LGU2A182MELB makes it well-suited for use in a variety of temperature and humidity conditions, as well as in a wide range of DC and AC applications. The rated temperature range for the LGU2A182MELB is -40°C to +85°C, and it has an extreme temperature range of -55°C to +125°C. It can also withstand a maximum ripple current of up to 1.2A at an ambient temperature of +85°C.

Working Principle

Aluminum electrolytic capacitors are constructed from two layers of foil, separated by a layer of oxide film. The oxide layer acts both as an insulator and as a dielectric, and is formed when the capacitor is first charged with electricity. It also serves as a dielectric barrier between the two layers of aluminum foil, allowing stored electrons to pass back and forth between them. The amount of charge stored in an electrolytic capacitor is proportional to the thickness of the oxide layer.

When the capacitor is connected to a voltage source, current flows into the positive terminal of the capacitor, causing oxidation of the aluminum foil at the positive side of the capacitor. This creates an oxide layer on the positive terminal, which serves as a dielectric barrier between the two layers of aluminum foil. As the current continues to flow, it causes electrons to accumulate in the negative terminal of the capacitor. This accumulation of electrons in the negative terminal of the capacitor creates a condition of capacitance.

The thickness of the oxide film determines the type of capacitor and its electrical characteristics. In the case of the LGU2A182MELB, the aluminum electrolytic capacitor has a dielectric strength of 175Vdc, a maximum voltage of 18Vdc , and a maximum ripple current of 1.2A. The capacitor is also designed to be non-polarized, allowing it to be connected to either AC or DC power sources.

When the capacitor is disconnected from the power source, it will retain the charges stored in its layers of foil, allowing it to be used as a storage device for energy. This is why aluminum electrolytic capacitors are commonly used in applications such as power supplies and audio amplifiers, as they allow for the storage and release of electrical energy on demand.

Conclusion

The LGU2A182MELB aluminum electrolytic capacitor is a popular and reliable capacitor choice for a range of low-voltage and medium-voltage AC/DC applications, such as power supplies, audio amplifiers, electrical filters and voltage regulators. It has a wide-operating temperature range, long-term stability and high electrical efficiency, making it an ideal choice for many different electronic systems. Moreover, the capacitor’s nonpolarized design gives it increased versatility, allowing it to be used in a variety of power sources.

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