With the rise of SMT technology, chip-type multilayer ceramic capacitors (MLCCs) have received more and more attention because they can greatly improve the high-frequency characteristics of circuits and functional components. In this field, Japan still occupies a leading position, and under the leadership of Fenghua, Yuyang, and Sanhuan, the MLCC industry in China is also experiencing a vigorous development.
The ever-improving ceramic technology has greatly improved the high-frequency characteristics of circuits and functional components.
The origin of multilayer ceramic capacitors (MLCs) can be traced back to the birth of glass glaze capacitors during World War II. Due to the high demand of high-frequency capacitors and high-power emission capacitors for mica media, and the scarcity of mica mineral resources and the impact of war, the U.S. Army Communications Department funded Dupont’s ceramics laboratory to spray glass glaze media and screen printing silver. The electrodes were co-fired after lamination, and the monolithic process of reheating the terminal electrodes was studied, and a number of technical patents were obtained. The medium formulation improves the dielectric constant and reduces the loss. The glass glaze capacitor can completely replace the mica capacitor.
After the war, this monolithic process was promoted and further improved at the company Vitramon and Sprague and gradually evolved into two typical Wet Processes today. The former is a printing medium method. Vitramon is still in use today. It was used by TDK in Japan, Syfer in the United Kingdom, and some AVX processes in the United States. It further promoted the Kyocera Group in Japan to the limit level. The latter is known as the "Waterfall Technique". Sprague maintained its scale production until the end of the 1980s. It is currently still in the MRA laboratory and has been promoted in all fields of the chip multilayer inductor (MLCI).
While monolithic capacitors have been promoted, glass glaze media have also been gradually replaced by high-frequency ceramic media with excellent properties. While ferroelectric ceramics have been successfully used for single-layer dielectric capacitors, the introduction of monolithic structures is more capable of demonstrating high specific capacitance advantages. It is the introduction of these two types of ceramic media that gradually developed into today's Class 1 and Monolithic Ceramic Capacitors, or Multi-layer Ceramic Capacitors.
In the 1960s, the MLC chip was used as an external component of a thick thin film hybrid integrated circuit (HIC), and was called a non-inductive capacitor because of its leadless structure, exhibiting excellent frequency in a wide frequency band. characteristic. In the 1970s, with the rise of SMT technology, MLC chips evolved into chip-type multilayer ceramic capacitors (MLCC) and mounted directly on the PCB board, greatly improving the high-frequency characteristics of circuits and functional components.
After many shuffles, Japanese companies still occupy market leading positions.
In the mid-to-late 1990s, Japanese large-scale MLCC manufacturers took full advantage of the Chinese market and successively established joint ventures or wholly-owned enterprises such as Beijing Murata, Wuxi Murata, Shanghai Kyocera, Dongguan Yuki Electric, and Dongguan TDK. During this period, it overcomes the reliability problems that have been plaguing more than ten years, and low-cost MLCCs based on the core technology of the base metal electrode (BME) have begun to enter into commercial applications. Korean-funded enterprises represented by Tianjin Samsung Electric also began to emerge as a new force.
At the turn of the new century and the new century, Philips abandoned and transferred the Passive Components Business Unit at the top of the industry, opening the prelude to the full adoption of BME technology in the MLCC industry in Taiwan. The overall rise of Taiwanese companies such as Guoju, Huaxin, Dafang, and Tianyang completely broke the monopoly of Japanese companies in BME manufacturing technology, and cost-effective MLCCs have made significant contributions to technological upgrading and cost reduction of IT and A&V industries. At the same time, Taiwanese companies have begun to transfer their processes from the back to the front to the mainland factories.
Under the influence of the international financial crisis in 2008, the global MLCC reshuffled. Japan's Murata has successively merged with Rohm and Panasonic's MLCC Division to continue ranking first, and the rising star of South Korea's Samsung Motors has surpassed other opponents to rank second in the past ten years. It has also surpassed Murata to form two strong hegemony situations. TDK's merger with EPCOS, Taiyo Yuwook and Kyocera/AVX can only maintain the status of the second group. China’s Taiwanese giants have merged with Huaya, Suiyuan, Huaxin’s merged Huiqiao, and they have begun to challenge even the second in terms of capacity. group.
Mainland China's MLCC Technology Breakthrough Mainland China's capacitor industry has now basically realized the MLCC mainstream product localization supply situation.
In the process of MLCC development, it is necessary to place special emphasis on the historical contributions of mainland Chinese science and technology workers. After the Second World War, the glass glazed capacitor technology similar to the United States developed by the Soviet Union was introduced into China's mainland and formed a certain scale of production. In order to further improve the performance and expand production capacity, in the 1960s, the Chinese mainland industry began to try to use ceramic media for roll forming and printing lamination processes to manufacture monolithic ceramic capacitors. In order to meet the requirements of multi-layer co-firing process, Au-Pd-Pt ternary noble metal electrode system is required to use traditional ceramic capacitor dielectric materials sintered at high temperature above 1300°C. Due to the high cost, only a small amount of military products can be maintained. Several units, led by the former Ministry of Electronics Industry, 7, 715 Factory, and South China Institute of Technology, successively completed the development of low temperature sintering of Grade 2 and Type 1 monolithic ceramic capacitors in 1967 and 1969. The former is dominated by Pb(Mg1/3Nb2/3)O3, first proposed by Smolenskii. The latter includes MgO-Bi2O3-Nb2O5 and ZnO-Bi2O3-Nb2O5 systems, as well as the high-medium temperature coefficient Pb(Mg1/2W1/2)O3 system. The above system achieved industrial production in the mainland for 20 years.
Since the 1980s, China's mainland has introduced dry casting and wet printing to form films and related production technologies, which has effectively improved the level of MLC manufacturing processes. In the implementation of the national "863" plan and many other scientific and technological breakthroughs, Tsinghua University, Xi'an Jiaotong University, 715 Factory of the former Ministry of Electronics Industry, 7 institutes, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Zhaoqing Fenghua Electronics Factory, Quanzhou Radio Components Factory The unit continued to work hard to comprehensively improve and improve the performance indicators of the low-temperature sintering MLC material system, which has taken it to a new level.
The waferization rate of China's capacitor industry before the 1980s was almost zero, and only a very small number of multi-layer ceramic capacitors (MLC) semi-finished chips were hand-mounted on thick film hybrid integrated circuit substrates. In the mid-1980s, 715 factories, 798 factories and several provincial and municipal directly subordinate enterprises of the former Ministry of Electronics Industry successively imported 13 MLC production lines from the United States, marking the transition from the early rolling film forming process to the modern ceramic medium film flow in the core technology of MLC production in mainland China. The process was extended to achieve substantial breakthroughs in product miniaturization and high reliability. In 1987, the MLC industry consortium with the introduction of production lines was established.
The above-mentioned enterprises merged with Dalaikai, Twee, and Lingtong, etc., which were subsequently entered into, and the Fenghua Group emerged. In the meantime, due to the breakthrough of the three-layer electrode plating process, the transition from a leaded multilayer ceramic capacitor to a fully surface-mounted multilayer ceramic capacitor (MLCC) has been realized.
Relying on independent research and development and technological innovation team system, the industry's new army - founded in 2001 Yuyang Technology Development Co., Ltd. in a very short time completed the ultra-thin casting process and BME core technology research and development and industrialization, in the MLCC mini The fast, high-reliability and low-cost manufacturing technologies have occupied a leading position in China. Among them, its self-developed 0402 BME micro MLCC passed the scientific and technological achievements appraisal in October 2002, filling the domestic gap, which is a domestic initiative.
In 2008, Yuyang Science and Technology successfully developed 0201 ultra-mini MLCCs and went public in bulk, again filling the gaps in the domestic market. In submicron materials and film casting processing technologies, BME Micro MLCC material systems and product structure design, reducing atmosphere sintering process and other key Technological innovation has made major breakthroughs.
At the same time, Fenghua, Sanhuan and other domestic large-scale components and enterprise groups have also completed the technical transformation and industrialization of BME-MLCC. It has become the MLCC's mainstream product localization manufacturing supply "three sets of carriages", and mergers with mainland companies have retained the military and non-standard special varieties supply points after restructuring, which together constitute a new pattern of China's mainland MLCC industry.
The ever-improving ceramic technology has greatly improved the high-frequency characteristics of circuits and functional components.
The origin of multilayer ceramic capacitors (MLCs) can be traced back to the birth of glass glaze capacitors during World War II. Due to the high demand of high-frequency capacitors and high-power emission capacitors for mica media, and the scarcity of mica mineral resources and the impact of war, the U.S. Army Communications Department funded Dupont’s ceramics laboratory to spray glass glaze media and screen printing silver. The electrodes were co-fired after lamination, and the monolithic process of reheating the terminal electrodes was studied, and a number of technical patents were obtained. The medium formulation improves the dielectric constant and reduces the loss. The glass glaze capacitor can completely replace the mica capacitor.
After the war, this monolithic process was promoted and further improved at the company Vitramon and Sprague and gradually evolved into two typical Wet Processes today. The former is a printing medium method. Vitramon is still in use today. It was used by TDK in Japan, Syfer in the United Kingdom, and some AVX processes in the United States. It further promoted the Kyocera Group in Japan to the limit level. The latter is known as the "Waterfall Technique". Sprague maintained its scale production until the end of the 1980s. It is currently still in the MRA laboratory and has been promoted in all fields of the chip multilayer inductor (MLCI).
While monolithic capacitors have been promoted, glass glaze media have also been gradually replaced by high-frequency ceramic media with excellent properties. While ferroelectric ceramics have been successfully used for single-layer dielectric capacitors, the introduction of monolithic structures is more capable of demonstrating high specific capacitance advantages. It is the introduction of these two types of ceramic media that gradually developed into today's Class 1 and Monolithic Ceramic Capacitors, or Multi-layer Ceramic Capacitors.
In the 1960s, the MLC chip was used as an external component of a thick thin film hybrid integrated circuit (HIC), and was called a non-inductive capacitor because of its leadless structure, exhibiting excellent frequency in a wide frequency band. characteristic. In the 1970s, with the rise of SMT technology, MLC chips evolved into chip-type multilayer ceramic capacitors (MLCC) and mounted directly on the PCB board, greatly improving the high-frequency characteristics of circuits and functional components.
After many shuffles, Japanese companies still occupy market leading positions.
In the mid-to-late 1990s, Japanese large-scale MLCC manufacturers took full advantage of the Chinese market and successively established joint ventures or wholly-owned enterprises such as Beijing Murata, Wuxi Murata, Shanghai Kyocera, Dongguan Yuki Electric, and Dongguan TDK. During this period, it overcomes the reliability problems that have been plaguing more than ten years, and low-cost MLCCs based on the core technology of the base metal electrode (BME) have begun to enter into commercial applications. Korean-funded enterprises represented by Tianjin Samsung Electric also began to emerge as a new force.
At the turn of the new century and the new century, Philips abandoned and transferred the Passive Components Business Unit at the top of the industry, opening the prelude to the full adoption of BME technology in the MLCC industry in Taiwan. The overall rise of Taiwanese companies such as Guoju, Huaxin, Dafang, and Tianyang completely broke the monopoly of Japanese companies in BME manufacturing technology, and cost-effective MLCCs have made significant contributions to technological upgrading and cost reduction of IT and A&V industries. At the same time, Taiwanese companies have begun to transfer their processes from the back to the front to the mainland factories.
Under the influence of the international financial crisis in 2008, the global MLCC reshuffled. Japan's Murata has successively merged with Rohm and Panasonic's MLCC Division to continue ranking first, and the rising star of South Korea's Samsung Motors has surpassed other opponents to rank second in the past ten years. It has also surpassed Murata to form two strong hegemony situations. TDK's merger with EPCOS, Taiyo Yuwook and Kyocera/AVX can only maintain the status of the second group. China’s Taiwanese giants have merged with Huaya, Suiyuan, Huaxin’s merged Huiqiao, and they have begun to challenge even the second in terms of capacity. group.
Mainland China's MLCC Technology Breakthrough Mainland China's capacitor industry has now basically realized the MLCC mainstream product localization supply situation.
In the process of MLCC development, it is necessary to place special emphasis on the historical contributions of mainland Chinese science and technology workers. After the Second World War, the glass glazed capacitor technology similar to the United States developed by the Soviet Union was introduced into China's mainland and formed a certain scale of production. In order to further improve the performance and expand production capacity, in the 1960s, the Chinese mainland industry began to try to use ceramic media for roll forming and printing lamination processes to manufacture monolithic ceramic capacitors. In order to meet the requirements of multi-layer co-firing process, Au-Pd-Pt ternary noble metal electrode system is required to use traditional ceramic capacitor dielectric materials sintered at high temperature above 1300°C. Due to the high cost, only a small amount of military products can be maintained. Several units, led by the former Ministry of Electronics Industry, 7, 715 Factory, and South China Institute of Technology, successively completed the development of low temperature sintering of Grade 2 and Type 1 monolithic ceramic capacitors in 1967 and 1969. The former is dominated by Pb(Mg1/3Nb2/3)O3, first proposed by Smolenskii. The latter includes MgO-Bi2O3-Nb2O5 and ZnO-Bi2O3-Nb2O5 systems, as well as the high-medium temperature coefficient Pb(Mg1/2W1/2)O3 system. The above system achieved industrial production in the mainland for 20 years.
Since the 1980s, China's mainland has introduced dry casting and wet printing to form films and related production technologies, which has effectively improved the level of MLC manufacturing processes. In the implementation of the national "863" plan and many other scientific and technological breakthroughs, Tsinghua University, Xi'an Jiaotong University, 715 Factory of the former Ministry of Electronics Industry, 7 institutes, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Zhaoqing Fenghua Electronics Factory, Quanzhou Radio Components Factory The unit continued to work hard to comprehensively improve and improve the performance indicators of the low-temperature sintering MLC material system, which has taken it to a new level.
The waferization rate of China's capacitor industry before the 1980s was almost zero, and only a very small number of multi-layer ceramic capacitors (MLC) semi-finished chips were hand-mounted on thick film hybrid integrated circuit substrates. In the mid-1980s, 715 factories, 798 factories and several provincial and municipal directly subordinate enterprises of the former Ministry of Electronics Industry successively imported 13 MLC production lines from the United States, marking the transition from the early rolling film forming process to the modern ceramic medium film flow in the core technology of MLC production in mainland China. The process was extended to achieve substantial breakthroughs in product miniaturization and high reliability. In 1987, the MLC industry consortium with the introduction of production lines was established.
The above-mentioned enterprises merged with Dalaikai, Twee, and Lingtong, etc., which were subsequently entered into, and the Fenghua Group emerged. In the meantime, due to the breakthrough of the three-layer electrode plating process, the transition from a leaded multilayer ceramic capacitor to a fully surface-mounted multilayer ceramic capacitor (MLCC) has been realized.
Relying on independent research and development and technological innovation team system, the industry's new army - founded in 2001 Yuyang Technology Development Co., Ltd. in a very short time completed the ultra-thin casting process and BME core technology research and development and industrialization, in the MLCC mini The fast, high-reliability and low-cost manufacturing technologies have occupied a leading position in China. Among them, its self-developed 0402 BME micro MLCC passed the scientific and technological achievements appraisal in October 2002, filling the domestic gap, which is a domestic initiative.
In 2008, Yuyang Science and Technology successfully developed 0201 ultra-mini MLCCs and went public in bulk, again filling the gaps in the domestic market. In submicron materials and film casting processing technologies, BME Micro MLCC material systems and product structure design, reducing atmosphere sintering process and other key Technological innovation has made major breakthroughs.
At the same time, Fenghua, Sanhuan and other domestic large-scale components and enterprise groups have also completed the technical transformation and industrialization of BME-MLCC. It has become the MLCC's mainstream product localization manufacturing supply "three sets of carriages", and mergers with mainland companies have retained the military and non-standard special varieties supply points after restructuring, which together constitute a new pattern of China's mainland MLCC industry.
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