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Image of KEMET Comparing Tantalum Polymer and MnO2 Capacitors - Benefit

The benefit of the Tantalum pellet lies in its porosity and the enormous amount of surface area present within this pellet structure. As shown in this schematic here, this surface area is coated with the Tantalum Pentoxide, which is in turn coated with the semiconductor. The external surfaces of the Tantalum pellet are also coated with Tantalum Pentoxide and semiconductor. A metal filled layer provides a highly conductive encapsulating layer for the capacitor. A carbon layer serves to chemically isolate the semiconductor from the metal filled layer.

PTM Published on: 2021-08-10