199D226X9020DXB1

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Tantalum Capacitors

Tantalum capacitors are a type of capacitors with a very thin layer of tantalum pentoxide between two conductors. It is a component used for electrical circuits that store electrical energy. The term “tantalum capacitor” is derived from a combination of the chemical symbol of Tantalum and Capacitance. It is able to retain charge for a long period of time, making it highly reliable.

The specific part number 199D226X9020DXB1 is a tantalum polymer chip capacitor with an ESR less than 3.2 Ω, a capacitance of 220uF, a 10-volt rating, and an operating temperature range of -55°C to +85°C. This part number is commonly used for filtering, decoupling, and energy storage in digital and analog circuits.

Tantalum capacitors have one of the simplest working principles among all capacitors. If a voltage source, such as a battery, is connected to the positive and negative terminals of the capacitor, electrons will flow and create an electric field between the two plates. This electric field stores energy, which can be released when the capacitor is connected to an appropriate load.

These components are well suited for portable and power control electronics applications due to their long cycle life, immunity to temperature and high energy densities. They are also helpful in reducing noise in circuits, as their ripple current is lower than that of aluminum electrolytic capacitors. Moreover, they have a wide range of temperature capabilities, from -55°C to +125°C.

Tantalum capacitors can be divided into two types: Tantalum Oxide Capacitors (polcap) and Tantalum Polymer Capacitors (TP-cap). Tantalum Oxide Capacitors have a higher quality factor and lower losses due to their internal structure, while Tantalum Polymer Capacitors are lower in cost, have a smaller equilibrium temperature coefficient, but a higher failure rate.

Nevertheless, Tantalum Capacitors offer a lot of advantages. As they are known to have greater stability, higher endurance and improved temperature characteristics compared to most other types of capacitors, they can provide power supply filtering, long-term energy storage, and decoupling capacitance for cost-sensitive and highly reliable power applications.

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