173D224X0035U

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Tantalum capacitors, also known as Ta capacitors, are capacitors that contain tantalum. This material is both highly stable and corrosion-resistant, making them superior to traditional capacitors in both performance and longevity. While they come in a variety of configurations, the most common type of tantalum capacitor features an anode made from sintered tantalum powder and an electrolyte consisting of an organic solvent mixed with sulfuric acid.

The model 173D224X0035U is an example of a standard tantalum capacitor. It is a surface mount device (SMD) encapsulated in a minimum D case size. As a non-polarized type, it features two anodes, with one being labeled “+” and the other being labeled “−”. Each anode has a respective cathode terminal, allowing it to be used in both AC and DC circuits.

The operating voltage range of the 173D224X0035U is 2.0V to 35V with a capacitance range of 22µF to 180µF. The rated capacitance tolerance is ±10%, and the rated ripple current is 6.5 A @ 105°C. It also has a relatively low ESR compared to most other tantalum capacitors of its size: typically between 7 and 12 mΩ. This, in turn, increases the device’s frequency response and reduces the power dissipation.

In terms of its application field, the 173D224X0035U is typically used for AC and DC power line decoupling, as well as for noise filtering in audio equipment and other systems. It is also used for noise suppression for switched-mode power supplies, such as driver boards and chargers. Besides, it is often used in memory modules thanks to its intermittent ripple current capability over a range from 25Hz to 100kHz.

The working principle of the 173D224X0035U is relatively straightforward. The device stores an electrical charge on the positive and negative anodes. When AC or DC voltage is applied, both anodes are polarized and an electrical field is created between them. This field generates an electric charge and allows a current to flow between the two poles. Since the capacitor is polarized, each pole must have a corresponding cathode terminal.

The electrostatic field within the device is maintained in a low-loss condition thanks to the incredibly thin oxide layer formed on the surface of the tantalum powder. This oxide layer is only a few nanometers thick and exhibits exceptional insulation properties, which further increment the capacitor’s efficiency and stability. In addition, the capacitance of the device can be adjusted using trim capacitors or thin-film techniques.

To sum up, the 173D224X0035U is a standard non-polarized tantalum capacitor with superior stability, reliability, and power dissipation characteristics. Its application field includes power line decoupling, noise filtering, and noise suppression for switched-mode power supplies. Its working principle relies on the electric field created between the two polarized anodes, which is regulated by an incredibly thin oxide layer formed on the surface of the tantalum powder.

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