1、Miniaturization

For pocket-sized electronic products such as camcorders and mobile phones, more miniaturized MLCC products are required. On the other hand, due to the advancement of precision printed electrodes and lamination processes, ultra-small MLCC products have also gradually become available and applied. Taking the development of rectangular MLCCs in Japan as an example, the external dimensions have been reduced from 3216 in the early 1980s to 0603 now. The mainstream product of MLCC produced by domestic enterprises is Type 0603, which has broken through the technical difficulties of mass production of Type 0402 MLCC.

2、Cost Reduction

Due to the use of expensive palladium electrodes or palladium-silver alloy electrodes, 70% of the manufacturing cost of traditional MLCCs is occupied by electrode materials. The new generation of MLCCs, including high-voltage MLCCs, use cheap base metal materials such as nickel and copper as electrodes, which greatly reduces the cost of MLCCs. However, the base metal inner electrode MLCC needs to be sintered at a lower oxygen partial pressure to ensure the conductivity of the electrode material, and too low oxygen partial pressure will bring about the semiconducting tendency of the dielectric ceramic material, which is not conducive to the insulation and reliability.

3、Large capacity and high frequency

On the one hand, with the low-voltage drive and low power consumption of semiconductor devices, the operating voltage of integrated circuits has been reduced from 5 V to 3 V and 1.5 V; on the other hand, the miniaturization of power supplies requires small and large-capacity products to replace bulky aluminum Electrolytic capacitors. In order to meet the development and application of such low-voltage and large-capacity MLCCs, in terms of materials, relaxation-type high-dielectric materials with relative dielectric constants 1 to 2 times higher than BaTiO3 have been developed.

In the process of developing new products, three key technologies have been developed at the same time, namely, the technology of producing ultra-thin green sheet powder, the technology of improving the film-forming technology of the green sheet, and the technology of matching the shrinkage rate of the inner electrode and the ceramic green sheet. Recently, Japan's Panasonic Electronic Components Company has successfully developed a large-capacity MLCC with a maximum capacitance of 100 μF and a maximum withstand voltage of 25 V, which can be used in the power supply line of liquid crystal displays (LCDs).

Source: oneriver