T491U157K006AT

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Tantalum capacitors are a type of electrolytic capacitors, which use tantalum in two forms, as a metal and as an oxide. They are the style most commonly used in surface mount applications and are very popular due to their small size and excellent temperature characteristics. They are commonly used in modern electronic applications, such as in smartphones and other portable electronics.

T491U157K006AT is a type of surface mount polymeric tantalum capacitors. These capacitors are also known as chip tantalum capacitors, and are smaller and more space-efficient than standard electrolytic capacitors. They come in various package sizes such as 0201, 0402, 0603, 0805 and 1206 and are designed for low profile, high density applications.

The T491U157K006AT has the following specifications:

• Capacitance: 15.7µF (microfarads)
• Voltage Rating: 6V (volts)
• Maximum Leakage Current: 0.25 µA (microamps)
• Tolerance: ±10% at 25°C

T491U157K006AT capacitors are mainly used in power supply decoupling and noise filtering applications. The capacitors combine two technologies to provide low ESR (Equivalent Series Resistance) and very low leakage current. Due to their low ESR, they are ideal for smoothing out ripple and noise in power supply circuits. They are also used for frequency application, such as coupling and decoupling on critical ICs, as well as filtering in general purpose power applications.

Tantalum capacitors have a much different construction from electrolytic capacitors. The inner anode of the tantalum capacitor is formed by sintering with tantalum powder, which is then layered with a dielectric material like MnO2 (Manganese Dioxide). The anode is then wound around a core, and the cathode is made from a lead or tin plate. The capacitor is then filled with electrolyte, which is usually a mixture of manganese oxide and an alcohol.

The working principle of a T491U157K006AT is based on the basic working principle of an electrolytic capacitor. The anode and cathode of the capacitor are connected to an AC or DC power source, and the electrolyte in the capacitor acts as a dielectric material between the two plates. This dielectric material stores charge, which is then blocked from flowing between the two plates until a voltage is applied across the capacitor. When a voltage is applied across the capacitor, the electrons flow from the anode to the cathode, and the current flows from the cathode to the anode. This is what causes the capacitor to store energy.

In conclusion, the T491U157K006AT is a surface mount polymeric tantalum capacitor with a capacity of 15.7µF and a voltage rating of 6V. It is ideal for use in applications such as power supply decoupling and noise filtering. Its working principle is based on the basic working principle of an electrolytic capacitor, where the anode and cathode are connected to an AC or DC power source and the dielectric material in the capacitor stores charge.

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