烧结银
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碳化硅功率半导体革命的加速器:国产烧结银崛起
半导体行业观察· 2025-06-13 00:46
Core Viewpoint - The article emphasizes the revolutionary impact of silicon carbide (SiC) and sintered silver technology in enhancing the performance of power semiconductors, particularly in electric vehicles (EVs) and renewable energy applications. The combination of these technologies is crucial for overcoming key challenges such as range and fast charging in EVs, thereby accelerating their market adoption [1][10]. Group 1: Sintered Silver Technology Overview - Sintered silver technology is a new lead-free chip interconnection method that utilizes micron-sized silver particles sintered below 300°C to achieve high-temperature resistance and thermal conductivity [4]. - The technology has evolved since the late 1980s, transitioning from laboratory research to widespread industrial application, driven by advancements in process optimization and material performance [5]. - The core mechanism of sintered silver technology is atomic diffusion, which allows for strong connections at relatively low temperatures, ensuring good electrical and thermal conductivity while maintaining mechanical strength [6]. Group 2: Advantages of Sintered Silver in Power Semiconductors - Sintered silver technology supports high operating temperatures, making it suitable for high-frequency, high-voltage, and high-temperature power modules, effectively transferring heat and maintaining stability in harsh environments [8]. - It offers significantly higher thermal conductivity (over 200 W/m·K) compared to traditional lead-based solders (30-50 W/m·K), enhancing power density in compact applications [8]. - The high melting point of silver (961°C) prevents common fatigue effects seen in solder connections, thus improving reliability in demanding applications such as aerospace and automotive electronics [8]. Group 3: Application in Electric Vehicles - Sintered silver is primarily used in main drive inverters of electric vehicles, with three packaging types: TPAK, HPD, and DCM [11]. - The application of sintered silver technology can enhance overall system efficiency by 8%-12%, allowing vehicles to travel further on the same amount of energy or consume less energy over the same distance [13]. - It significantly improves the reliability and stability of components under extreme conditions, reducing the likelihood of failures in critical systems like battery management and motor controllers [13]. Group 4: Market Potential and Industry Dynamics - The global market for sintered silver in electric vehicles is projected to reach approximately 20 billion yuan by 2030, with the value per vehicle estimated between 300 to 1000 yuan [22]. - Currently, the sintered silver market is dominated by foreign companies, highlighting a gap in domestic production capabilities that could hinder the development of SiC and other power semiconductors [22]. - Wuxi Dike Electronic Materials Co., Ltd. (DKEM®) is positioned as a leading supplier of high-performance electronic pastes, focusing on the development of automotive-grade sintered silver products to meet diverse application needs [22][43].
电动车“马力渴望”之下,国产车规级“烧结银”扩充朋友圈
2 1 Shi Ji Jing Ji Bao Dao· 2025-04-29 04:32
Core Viewpoint - The recent launch of the new L6 model by Zhiji Automotive, a subsidiary of SAIC Group, highlights a significant breakthrough in the new energy vehicle (NEV) industry, particularly through the use of conductive silver paste from Dike Co., Ltd. for its key feature, the "instant intelligent control" sunshade [1] Group 1: Industry Developments - The introduction of Dike's silver paste for automotive applications marks the beginning of a potential growth phase for automotive-grade products, especially in the silver material electronic business [1] - The demand for silicon carbide (SiC) power semiconductor modules is increasing, with projections indicating that SiC will become a major selling point for domestic NEVs by 2025 [1][3] - The penetration rate of SiC in domestic NEVs is expected to exceed 26% by the first half of 2024, with both international and domestic companies experiencing significant growth in shipments [3] Group 2: Material Insights - Silver materials are gaining traction in high-power electronic modules due to their superior electrical and thermal conductivity compared to copper, leading to a rapid increase in their usage [3] - The high operating temperatures and switching frequencies of SiC chips necessitate advanced packaging materials, with sintered silver providing excellent thermal and electrical conductivity [4] - The global market for sintered silver is currently dominated by foreign companies, with significant reliance on imports for high-cost automotive electronic raw materials [2][4] Group 3: Company Performance - Dike Co., Ltd. has recently achieved IATF 16949 certification, which is expected to accelerate the adoption of its sintered silver and other materials in NEV applications [5] - Financial data indicates that Dike is projected to achieve a revenue of 15.351 billion yuan in 2024, representing a year-on-year increase of 59.85%, while net profit attributable to the parent company is expected to decline slightly by 6.6% [6] - The company has successfully transitioned from the photovoltaic sector to automotive power electronics, leveraging its expertise in micro-nano silver powder technology [6][7] Group 4: Future Outlook - Dike's strategy includes reducing silver content in its products to lower costs, with plans to produce copper-based solutions that maintain compatibility with existing technologies [8][9] - The anticipated mass application of high-copper paste in TOPCon batteries by the second half of 2025 could further enhance Dike's profitability and market position [9]