T491B334M050AG

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Tantalum Capacitors

T491B334M050AG is an electro-chemical device that is widely used in the fields of electrical engineering and audio engineering. It has a wide range of applications in consumer electronics, automotive electronics, military applications, and aerospace applications. Tantalum capacitors are typically used for decoupling, filtering, buffering, and other tasks that require tight frequency response, low equivalent series resistance (ESR), and low leakage currents.

Application Field

T491B334M050AG capacitors are typically used in DC-DC converters, inverters, high-voltage load switching circuits, and other power supply circuits. They are especially well-suited to power supply circuitry due to their high capacitance per unit volume, low ESR, high breakdown voltage, temperature stability, and negligible polarization effect.

T491B334M050AG capacitors are also used in RF circuits, such as high-frequency power amplifiers, harmonic filters, and other applications that involve transmitting and receiving signals. They provide higher capacitance than comparable discretes, making them more efficient in terms of power consumption. Additionally, their low ESR reduces energy losses when using high-frequency circuits.

Working Principle

T491B334M050AG capacitors use an electrolytic capacitor formed by the electrochemical oxidation of a tantalum anode. As current passes through the anode, the electrolyte oxidizes the anode oxide, creating a high-permittivity insulating layer between the anode and the cathode. This increases the capacitance of the capacitor, allowing it to store more energy. This capacitance is limited by the size of the dielectric layer, which is determined by the permittivity of the electrolyte and the voltage applied to the capacitor.

The capacitor ports have internal resistances that determine how much current can flow through them. This is what determines the ESR of the capacitor. Lower ESRs result in smoother ripple waveforms with minimal inductive artifacts and greater power efficiency.

T491B334M050AG capacitors are known for their rugged construction and low capacitance variation over temperature and frequency, due to their high working voltage. This high voltage enables them to be used in applications that might otherwise require ceramic capacitor technology.

T491B334M050AG capacitors are also known for their long life, as they can be expected to last for more than a decade before needing to be replaced. This is due to their uniquely high breakdown voltage, which ensures that the capacitor will not fail under normal operating conditions.

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