Traditional tantalum capacitors are known for their excellent reliability, robustness and stable parameters. This is why conventional tantalum capacitors with counter MnO2 electrode are still a popular choice for long life and high reliability applications. However, one of the downsides of the MnO2 electrode system is its higher ESR when compared with polymer tantalum capacitors. The multi-anode concept (i.e. use of several node elements within one capacitor body) significantly reduces ESR and is an ideal choice for most demanding applications such as servers and high power telecommunication boards.
This article describes a novel multi-anode configuration that has been developed to lower the height of the components and reduce the ESR and manufacturing costs. This approach will be compared to standard single anode designs. The common trend in switch-mode power supplies, micro-processors and digital circuit applications is the reduction of noise while operating at higher frequencies. In order to make this possible, components with low equivalent series resistance (ESR), high capacitance and high reliability are required.
To read the full article, clicker here.Click here for the illustrations: Figure 1, Figure 2, Figure 3, Figure 4 |
