See how China's capacitor industry is stronger
With the development of the electronic information industry and the popularity of home appliances, from the localization of color TVs in the 1980s, refrigerators, washing machines, tape recorders, black and white televisions, home air conditioners, telephones, energy-saving lamps, VCDs, DVDs, computers, The development of program-controlled switches has improved the quality of life of every Chinese family. China's capacitor industry has also achieved unprecedented development. In terms of quantity, quality and service, it has met the needs of the above-mentioned development of electronic machines and household appliances, and has driven the development of related materials, equipment and instrument industries. Become a global capacitor manufacturing country.
The meaning of sustainable development will be different from the past
Looking back at history, after more than 20 years of struggle, China has become a global capacitor manufacturing country, accounting for about 30% of global production. Due to the global economic recovery and the rapid development of China's information industry, the capacitor industry must continue to grow bigger and must be stronger and stronger, which is the core of the development of connotation changes.
In the process of chipping electronic components, resistors and capacitors take the lead. In 2002, the chip-type rate of resistors in Japan reached 98%, the chip-type rate of ceramic capacitors reached 80%, and the chip-type rate of tantalum capacitors reached 99% in 2001; the rate of chip resistance in the United States reached 40 in 2000. %. As for the inductor chip rate, Japan has reached more than 52% in 1998. In 2002, Japan and the United States have reached 70%, and the inductor chip rate of signal circuits has reached more than 80%; the switch chip rate has reached More than 20%. In 1999, the Japanese ceramic filter chip rate was 19%, while the chip ceramic filter used in cellular mobile communication equipment accounted for 71%, and the temperature compensation crystal oscillator chip rate was over 90%.
While the electronic components are being chip-formed, miniaturization is rapidly progressing, and not only the conventional components are rapidly miniaturized, but also the chip components are rapidly miniaturized. At present, the 1608 chip type RC component has become the mainstream product produced in Japan. The 1005 chip RC component has become the mainstream RC component used in mobile communication equipment. Chip tantalum capacitors and chip plastic film capacitors have a minimum size of 1608 and are commercially available. Chip ceramic capacitors and chip type negative temperature coefficient thermistors (NTC) have begun mass production of 0603 type small products. Metalized plastic film capacitors and mica capacitors have been commercialized to produce 1608 type products.
With the thinning and lightening of electronic devices, the requirements for the integration of electronic components are becoming more and more intense. Japan's TDK Corporation has now produced monolithic ceramic capacitor arrays consisting of 4, 8, and 16 capacitor cores.
Ceramic capacitors will still dominate the world capacitor market, and chip capacitors will dominate ceramic capacitors and tantalum capacitors. The miniaturization, large capacity, high voltage, high frequency, anti-jamming and arraying will continue to be the development of ceramic capacitors. direction. The 1005 type chip ceramic capacitor has been popular, the 0603 type product has been put on the market, and the 0402 type product has been developed. At present, monolithic ceramic capacitors with a capacity of up to 100μF have been developed using thin-layer and multi-layer (600-800 layers) technology and internal electrode base metal technology. Manufacturers have been developing monoliths with capacities of 200μF or more. Manufacturing technology of ceramic capacitors.
Small size, large capacity, long life, high temperature resistance, low equivalent series resistance are still the development direction of aluminum electrolytic capacitors. In 2000, Matsushita Electronic Components Co., Ltd. developed the WA series of aluminum capacitors, which have a capacity value that is 2 to 18 times higher than before. At the same time, the company has also introduced ultra-low-profile chip aluminum capacitors with a height of only 0.95 mm.
The chip products continue to lead the development of tantalum capacitors in the direction of miniaturization, large capacity, low impedance and low ESR. The production and application of functional polymer tantalum capacitors will be further expanded, and the CV value of tantalum powder will continue to increase. Up to 100,000, but manufacturers (such as Japan's ELNA) have been developing powders with a value of 150,000 CV.
It is worth noting that engineers and technicians are developing tantalum capacitors using tantalum dielectric materials. Since the supply of tantalum is equivalent to 100 times that of tantalum, the shape, structure and performance of the capacitor are similar to those of chip tantalum capacitors due to cost. Capacitors are not suitable for mass production of 1000μF grades, and tantalum capacitors enable mass production of this grade.
The market is facing new opportunities for development
New electronic system, household appliances, communication equipment, industrial automation, etc. continue to emerge, providing new market opportunities for capacitor development.
The automotive electronics industry is currently the most popular industry in the international market. Traditional automotive electronics involves ten electronic systems, including electronic instrument panels, electronic fuel injection systems, car audio systems, engine management systems, global positioning systems, and brake anti-lock. System, airbag system, automatic driving system, automatic window system, automatic lock system, etc. Capacitors are used more or less in these systems, and higher requirements are placed against heat, shock, ripple, low impedance, and bulk form factor. The future of electric vehicles is the growth point of capacitors. Each electric vehicle needs at least four high-voltage and large-capacity electrolytic capacitors for use in circuits such as battery charging, voltage conversion, and inverters.
For household appliances, color TVs, stereos, digital cameras, DVDs, video recorders, laser phonographs, inverter air conditioners, inverter refrigerators, washing machines, microwave ovens, rice cookers, vacuum cleaners, energy-saving lamps, etc. are all large capacitor users. With the development of the whole machine, it is necessary to develop high-frequency, chip, energy-saving, environmental protection and other products, and now we must keep up with the development of digital TV, set-top boxes and digital cameras. In the industrial field, with the increasing variety of automation technologies such as computer integrated manufacturing systems (CIMS), digital machining centers, and automatic assembly machines, the development of frequency conversion technology has been promoted. Switching power supply, uninterruptible power supply (UPS), inverter, monitor, variable frequency motor, numerical control equipment, laser processing, inverter motor, oil exploration, third and fourth generation IGBT development, high speed The solar energy lighting system of the road, etc., the capacitor industry has to adapt to its changes.
In short, we must study the market changes brought about by the rapid changes of the whole machine in the above-mentioned fields, do a good job in the market operation, and constantly introduce products that meet the requirements of different machines to be stronger. In addition to factors such as the size, positioning, specialization level, and market control ability of enterprises used in the past, factors such as the speed of response, flexible production capacity, resource integration capability and innovation capability should be increased.
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