199D475X9050D5V1

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Tantalum capacitors are an important part of the electronics industry. They are small capacitors that are generally used in signal and power circuits where low dissipation and high insulation resistance are required. The number "199D475X9050D5V1" is a reference to a specific tantalum capacitor and will be discussed in more detail below.

Tantalum capacitors are highly reliable, low leakage capacitors that are particularly suited for applications that require a high operating voltage rating such as DC-DC converters. This technology is also useful in power delivery systems, where it is used in high-efficiency power conversion systems and circuits with low ESR (equivalent series resistance) requirements. These capacitors are a fraction of the size of traditional capacitors, even when they have the same rated capacitance. They are also much more reliable, and have a much longer lifespan due to their superior temperature stability.

The "199D475X9050D5V1" reference with respect to the Tantalum Capacitor includes several important features. The first two digits, "19", indicate the capacitor dimensions, which are 19mm long by 7.5mm wide. The letter "D" indicates the voltage rating of the capacitor, which in this case is 50V. The "9" indicates the capacitance in pico Farads, which is 90PF. The letter "X" signifies a special certificate required to meet certain safety requirements, and the final "5V1" indicates the tolerance rating, which in this case is 5%.

The inner workings of a tantalum capacitor consist of an anode pellet (made of tantalum metal) which is housed inside a cylindrical or rectangular outer casing, and two end plates, one of which is often made of gold. As the capacitor is charged, an oxide layer develops on the anode, which acts as the dielectric to store energy. This oxide layer will slowly increase in thickness over time, and its thickness determines the capacitance of the capacitor. When the capacitor is discharged, the oxide layer will decrease in thickness, thus reducing the capacitance of the capacitor.

Another important feature of a tantalum capacitor is its ability to withstand high-frequency signals. This is due to its low dielectric absorption property, which allows the capacitor to absorb and hold less than 5% of the total current. This is beneficial for a wide range of electronics and communication applications, as the capacitor is able to filter out noise from high-frequency signals.

Tantalum capacitors are available in a variety of different sizes, shapes, and capacitance levels to suit the needs of different applications. The "199D475X9050D5V1" reference relates to a specific capacitor that is 19x7.5mm in size, with a 50V voltage rating, 90pF capacitance, a special certification, and a 5% tolerance rating. The capacitor is well suited for applications requiring high operating voltage and high-frequency signal filtering.

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