Standard tantalum capacitor technology offers high capacitance per volume in combination with high rated voltages. The demand for low ESR values as an important aspect for short term switching and filtering applications increases year by year. One current topic is the DC/DC converter for the Pentium 4 voltage supply. The working voltages of modern CPUs are getting lower while voltage stability and power requirements are rising. Therefore the corresponding in series connected capacitor arrays have to lower their overall ESR and ESL values and the sum capacitance has to increase. One promising approach to stand these challenges is the multiple anode technology. Our multiple anode development is focussed on the implementation of higher CV-powders and new capacitor technologies. New powders will offer the opportunity to extend the capacitance range in direction of more than l000μF in E-case dimensions. On the other hand the variety of EPCOS capacitor types makes it possible to combine new technologies with multiple anode arrangements. Polymer coated types for example will reach the 10 mOhm region with comparable capacitance as manganese dioxide coated ones. Results concerning the achieved electrical parameters of different anode designs are discussed.
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