Advantages and disadvantages of tantalum capacitors and analysis of filtering effect

The full name of tantalum capacitor is tantalum electrolytic capacitor, which is also a kind of electrolytic capacitor. Tantalum capacitor USES metal tantalum as the medium, but it does not use electrolyte as common electrolytic capacitor does. Tantalum capacitor does not need to be fired with capacitor paper coated with aluminum film like common electrolytic capacitor. In addition, tantalum capacitors are suitable for working at high temperatures because there is no electrolyte inside. Tantalum capacitors are characterized by long life, high temperature resistance, high accuracy and excellent performance of filtering high frequency wave changing. In the working process of tantalum electrolytic capacitor, it has the performance of automatically repairing or isolating the defects in the oxide film, so that the oxide film medium can be strengthened and restored at any time without being damaged by continuous accumulation. This unique self-healing performance ensures its long life and reliability advantages. Tantalum electrolytic capacitors have very high working electric field intensity and are larger than other types of capacitors to ensure their miniaturization. AVX agent

Disadvantages:

The capacity is smaller, the price is more expensive than aluminum capacitors, and the resistance to voltage and current is weak. It is applied to high-capacity filtering, such as tantalum capacitors can be seen near CPU slots, which are often used in conjunction with ceramic capacitors and electrolytic capacitors or in places with low voltage and current. Jimei agent

Ii. Good reasons for tantalum capacitor filtering:

Tantalum capacitors have excellent performance. They are small capacitors that can achieve large capacitance. Tantalum capacitors are very convenient for large capacitance.

Tantalum electrolytic capacitors are mainly used for filtering, energy storage and conversion, marking bypass, coupling and decoupling and as time constant elements. Pay attention to its performance characteristics in the application, the correct use will help to give full play to its functions, such as considering the working environment of the product and its heating temperature, as well as taking measures such as reducing the amount of use, if the use of improper will affect the working life of the product. KEMET agent

Solid tantalum capacitors are characterized by excellent electrical performance, wide operating temperature range, diverse forms, excellent volume efficiency and unique features: the working medium of tantalum capacitors is a very thin layer of tantalum pentoxide film generated on the surface of tantalum metal. The oxide film dielectric of this layer is integrated with the pole of one end of the capacitor and cannot exist alone. Therefore, the electrical capacity per unit volume is particularly large. That is, the specific capacity is very high, so it is particularly suitable for miniaturization. In the working process of tantalum capacitor, it has the performance of automatically repairing or isolating the defects in the oxide film, so that the oxide film medium can be strengthened and restored at any time without being damaged by continuous accumulation. This unique self-healing performance ensures its long life and reliability advantages.