T491A105K035AH

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Tantalum capacitors are used for energy storage and are typically used for non-polarized capacitive elements. The term tantalum is derived from the Greek “tantalos”, which means “immortal” and the metal is similarly described as having an “eternal” life when used for electrical components. The T491A105K035AH is a particularly reliable tantalum capacitor, and its application field and working principle can be found in this article.

Application Field

T491A105K035AH tantalum capacitors are used in a number of applications that run the gamut from low-power to high-power, plus digital and analog. Many of these devices are used in circuits where output capacitance and discharge time are required. The devices have a low temperature coefficient and excellent high-frequency performance and have a wide range of temperature tolerance, extending from -55°C to +125°C. The T491A105K035AH devices are well-suited for use in medical, radar, telecommunications, digital systems and analog devices. They are a reliable solution for equipment applications, where low ESR is important, such as telecommunications, instrumentation and audio circuits.

Working Principle

T491A105K035AH tantalum capacitors are an electrolytic device, where two small, flat sheets of metal (anode and cathode) are separated by an insulating electrolyte layer. When the capacitor is placed in a circuit, a voltage is applied across the the two metal plates (anode and cathode). This creates an electric field across the electrolyte layer which causes electrons to flow between the two plates through the electrolyte, forming a charge. The amount of charge stored in the capacitor is dependant on the amount of electric field applied across the electrolyte. The electric field created by the applied voltage must be sufficient to overcome the electrolyte\'s resistance in order for the capacitor to be charged. The amount of charge stored on the capacitor is inversely proportional to the size of the capacitor and directly proportional to the applied voltage.

The anode of the tantalum capacitor is made of a tantalum oxide dielectric layer, an oxidized tantalum powder, and a layer of manganese dioxide. The cathode of the device is usually made of a less expensive, less pure metal. By applying a voltage to the two plates, electrons flow between them through the electrolyte and create an electric charge. The charge stored in the capacitor is determined by the capacitance of the device and the voltage applied to it. The higher the voltage, the greater amount of charge is stored.

The T491A105K035AH tantalums offer several advantages over other electrolytic capacitors, such as low cost and low leakage current. They also have an extended range of capacitance, ranging from 12pF to 470 µF. In addition, they have a low voltage drop and wide operating temperature range.

Conclusion

The T491A105K035AH tantalum capacitor is a reliable and robust component that is highly utilized in a variety of applications where reliable energy storage is required. It’s application field ranges from low-power to high-power, digital and analog. Its working principle involves the formation of an electric field between two flat plates that carry electrons through an insulating electrolyte layer. The amount of charge stored in the capacitor is determined by the capacitance of the device and the applied voltage. The T491A105K035AH offers an economical solution for many different uses, capable of operating over an extended temperature range and offering low voltage drop and low leakage current.

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