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Previously, electrolytic capacitors and MLCCs where connected in parallel for decoupling in an analog circuit, but with the productization of large-capacitance MLCCs, the replacement of electrolytic capacitors with MLCCs is advancing. In particular, large-capacitance is required to reduce impedance due to the large ESR in an aluminum electrolytic capacitor. However, an MLCC does not need the same capacitance as an aluminum electrolytic capacitor, because low ESR is a feature of the MLCC. The miniaturization and low-profile of the MLCC also achieves a reduction in circuit board space, and the long lifetime and superior reliability are also replacement advantages.

PTM Published on: 2015-09-10