The full name of
tantalum capacitor is tantalum electrolytic capacitor, which is also a kind of electrolytic capacitor. It uses metal tantalum as the medium, unlike ordinary electrolytic capacitors which use electrolyte, tantalum capacitor does not need to be wrapped with aluminized capacitor paper like ordinary electrolytic capacitors. It has almost no inductance, but this also limits its capacity.
In addition, because tantalum capacitors have no internal electrolyte, they are suitable for high temperature operation.
This unique self-healing performance ensures the advantages of long life and reliability. Solid tantalum capacitors have excellent electrical performance, wide operating temperature range, various forms and excellent volume efficiency, which have unique characteristics: the working medium of tantalum capacitors is a thin layer of tantalum pentoxide film generated on the surface of tantalum metal.
This layer of oxide film medium is combined with one end pole of the capacitor and cannot exist alone. Therefore, it has a very high working electric field intensity per unit volume and a very large capacitance, that is, a very high specific capacity, so it is especially suitable for miniaturization.
