High Volumetric Efficiency

Tantalum capacitors offer high volumetric efficiency (CV/cc) compared with other capacitors types. In many applications, a 100 microfarad aluminum can be replaced with a 10 microfarad tantalum. Because of their package dimensions, tantalum capacitors enable circuit designers to optimize powder dissipation capability within the confines of precious circuit space. Also, their compact shape and flat top surface allow them to be easily handled and mounted onto circuit boards.

High Reliability

Unlike liquid electrolytic capacitors, Tantalum capacitors do not lose capacitance from the “deform effect.” Due to their solid construction, electrical performance does not degrade over time, which is why the shelf life of tantalum capacitors is considered to be infinite.

Better Temperature Performance

Tantalum capacitors have a wide operating range, -55 degrees C to +125 degrees C, and experience minimal degradation in electrical properties over this temperature range. The variation is dependent to some extent on the rated voltage and capacitor size.

No Wearout Mechanism

Tantalum capacitors have a unique “self-healing” mechanism that results in a decreasing failure rate over time. If a tantalum capacitor has an impurity or imperfection in the dielectric layer, a heavy current will flow through the site when a DC current is applied. Resistance of the MnO2 layer to this current causes localized heating and converts the MnO2 to a more resistive form, typically Mn2O3. This new oxide plugs up the fault site and reduces the current flow.

Better Frequency - ESR

Tantalum capacitor have better frequency characteristics than other types of capacitors, especially aluminum electrolytic capacitors. Typically, an identical CV tantalum has 10 times better ESR than.

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