Efficient Design on Body Strength and Capacitance of MLCC
When designing the capacitance of a Multi-Layer Ceramic Capacitor (MLCC), engineers used to focus on the way to find appropriate combination of the design parameters. These design parameters usually include materials, layer numbers and thicknesses of the electrodes and the dielectrics. However, not considering the mechanical strength in the design stage may lead the manufactured MLCC prototypes to fail in material test, and a redesign is very often needed. Such a design-and-redesign process is inefficient and needs to be improved. The present paper proposes a simple and efficient design approach to replace the traditional one. It first identifies an empirical equation correlating the capacitance of a MLCC to the design parameters based on specifications. The strength of the MLCC can be evaluated in advance with the help of mechanics of material. A design platform which considers simultaneously the capacitance and the material strength under various design parameters can be established. Demonstration of a MLCC design by the developed platform indicates the proposed approach does help engineers improving and speeding their designs.
Jingtao Han, Zhengyi Jiang and Sihai Jiao
C. M. Cheng et al., "Efficient Design on Body Strength and Capacitance of MLCC", Advanced Materials Research, Vols. 156-157, pp. 724-731, 2011