Tantalum capacitor is a kind of electrolytic capacitor. It uses metal tantalum as the medium, unlike ordinary electrolytic capacitors, which use electrolyte. Unlike ordinary electrolytic capacitors, tantalum capacitors are wound with aluminum coated capacitor paper. They have almost no inductance, but this also limits their capacity. In addition, since there is no electrolyte inside the tantalum capacitor, it is very suitable for working at high temperatures.
Advantages of tantalum capacitors
Tantalum capacitors have excellent performance. They are small in size and can reach large capacitance. There are few competitors in power filter, AC bypass and other applications. Tantalum capacitors have a wide working temperature range with a unique process, ranging from minus 25 ℃ to 125 ℃. In addition, they have excellent properties such as strong stability, high accuracy and small size. Moreover, this capacitor is reinforced and its insulation capacity is restored through oxide film dielectric, and has a unique self-healing function, so that it will not be damaged by the cumulative damage of the connection.
Disadvantages of tantalum capacitors
Advantages are bound to have disadvantages, mainly reflected in the following points. First of all, the price is high. Tantalum capacitors with the same capacity are ten times more expensive than ceramic capacitors. Secondly, the capacity is small. Because the electrolyte is not used as the medium, the capacity is limited. Moreover, the ability to withstand voltage and current is weak, so it can only be used in places with low voltage and current.
Application of Tantalum Capacitor
Tantalum capacitors have stable performance, high accuracy and excellent high frequency filtering. However, due to their high cost, they are generally used in high-end products, such as computer motherboards, video cards or mobile phones. Therefore, tantalum capacitors are generally used in circuits with high requirements for capacitor stability, and are suitable for cutting-edge military, computers, automobiles, communications, high-end household appliances and other fields.
