T551B127K040AT

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Tantalum - Polymer Capacitors offer a range of advantages over other types of capacitors, including lower cost, higher reliability, and a wide operational temperature range. The T551B127K040AT is a product from a leading semiconductor manufacturer. It is a polymer tantalum capacitor, rated for a capacitance of 1000μF, with a WVDC of 40V and a maximum ripple current of 0.900A at 120Hz. In this article, we will discuss the application field and working principle of the T551B127K040AT.

The T551B127K040AT is used in a wide range of applications, such as computer motherboards, motor controllers, power supplies, and HVAC systems. It is well-suited for powering relay drives, LEDs, and embedded systems. This capacitor employs a manufacturer\'s specific polymer tantalum capacitors which provide longer life and higher reliability compared to other types of electrolytic capacitors. It can operate in temperatures ranging from -40°C to +125°C, making it ideal for use in harsh environments.

The T551B127K040AT capacitor design incorporates an internal tantalum anode, a polymer cathode, an organic electrolyte, and a solid-state C-sleeve. The capacitor also includes an internal resistor for circuit protection. The polymer used in the cathode is a key characteristic of these capacitors, and is resistant to microphonics, evaporation, and shock. The solid-state C-sleeve serves as a junction between these elements where the electric field must pass through. This is the current flow path.

The working principle of the T551B127K040AT is that it acts as a high-energy storage device, storing electrical energy in the form of a charge in the electric field between the electrode and the electrolyte. When a voltage is applied to the terminals of the capacitor, ions contained in the electrolyte between the two electrodes become excited. This causes an electric field to be created between the electrodes, which stores energy inside the molecular structure of the electrolyte.

When an electric current passes through the T551B127K040AT, the electric field is created by the small current, which establishes a charge on the capacitor’s plates. This charge remains stored until the capacitor is discharged, which occurs when the electric current decreases or is no longer present. This movement of charge between the plates is what allows the capacitor to store and release energy in response to the applied voltage.

In summary, the T551B127K040AT is a polymer tantalum capacitor designed for use in a wide variety of applications. Its design incorporates a tantalum anode, polymer cathode, organic electrolyte, and a solid-state C-sleeve. The capacitor also includes an internal resistor for circuit protection and offers a wide temperature range. Its working principle involves the movement of charge between the plates to store and release energy in response to the applied voltage.

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