T491A474K035AT

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Tantalum capacitors are an increasingly popular choice of capacitor when it comes to high frequency and high voltage applications. They are used in many consumer electronics and power-electronic applications and have been around since the 1950s. T491A474K035AT tantalum capacitors are one of the most popular types used in these applications and are also known as Non-Polarized Capacitors.

T491A474K035AT tantalum capacitors are used for high frequency applications because of their small size, high performance, and wide temperature operating range. They are also able to handle larger peak voltages, so they are usually chosen when the application requires a capacitor with large capacitance and high current handling capacity. The capacitance of these capacitors is about 4.7µF, and the rated voltage is 4Vdc.

The construction of the T491A474K035AT tantalum capacitor is based on the principle of “dielectric absorption”. A layer of tantalum oxide (Ta203) is formed between the electrodes of the capacitor. This makes the capacitor electrically insulating but with a dielectric constant (K) of around 4500V/mm, which greatly reduces the capacitance leakage and yields higher capacitance values than ceramic capacitors. This makes T491A474K035AT capacitor more suitable for highly sensitive applications.

The working principle of the T491A474K035AT tantalum capacitor is similar to that of any other capacitors. When a voltage is applied to the capacitor, the current will flow due to the electric field created between the electrodes. Due to the dielectric absorption principle, the amount of current decreases with an increase in dielectric strength. Hence, the current through the capacitor will become stable once the dielectric strength reaches a certain level.

T491A474K035AT capacitors are mainly used in high-frequency circuits and are ideal for switching power supplies, security systems, automotive audio systems, and instrumentation. They are also used in power supplies, analog-to-digital converters, and low-noise amplifiers, where they are preferred over ceramic capacitors due to their higher reliability and lower ESR. T491A474K035AT capacitors are also suitable for RF and pulse applications, as they can withstand relatively high rates of voltage change without damage.

T491A474K035AT tantalum capacitors are among some of the most reliable and efficient capacitors for high-frequency circuits. They are highly stable and offer excellent high-frequency performance and low ESR, making them ideal for applications such as switch-mode power supplies, power systems, audio systems, and instrumentation. The dielectric absorption principle makes them able to withstand relatively high rates of voltage change without damage, which makes them ideal for RF and pulse applications.

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