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TDK Corporation announced that it has developed a multilayer ceramic chip capacitor with a new internal structure that allows Equivalent Series Resistance (ESR) values to be set to any value within a specified range, stabilizes ESR values, and can control circuit impedance (alternating current resistance). Due to smaller and increasingly advanced functions of electronic devices such as PCs and mobile information terminals, manufacturers are making strong demands for reduced mounting areas and miniaturization of components. As a result, power supply circuits on boards with ever higher mounting densities must combine multiple capacitors of different types. To respond to these demands, TDK used its strengths in materials technology to develop a capacitor with a new internal structure that allows ESR values to be set while maintaining the same capacitance as earlier products. Because the ESR values of capacitors located in the vicinity of the CPU can be set, there are smaller changes in impedance between the power supply and the CPU over a broad range of frequencies as well as voltage variation limiting effects. Limiting the variation in voltage stabilizes the current signal and eliminates effects on other circuits. These new capacitors are suitable for use in applications that require high power supply quality such as communications base stations and high-end PCs.


TDK of America Corporation
1221 Business Center Drive
Mount Prospect, IL, 60056