Global Automotive Chip Foundry Expansion 2025-2026: 100-Billion-Level Capacity Investments

From 2025 to 2026, major automotive chip foundries such as Xinlian Jicheng, Yuexin, and Infineon are investing billions in new production lines to address the persistent shortage of automotive-grade semiconductors. These expansions target specific process nodes and wafer sizes to optimize production efficiency and meet diverse application demands.

A key focus is on 40nm and 28nm process nodes for MCUs, which balance performance and power consumption for vehicle control units. Meanwhile, 8-inch and 12-inch SiC (silicon carbide) wafer lines are being prioritized for power devices in electric vehicles and charging infrastructure. Foundries are also upgrading to 12-inch advanced analog and mixed-signal nodes to support ADAS and infotainment systems.

The expected effect of these investments is a significant reduction in capacity bottlenecks, particularly for mature-node MCUs and high-voltage SiC MOSFETs. However, with increased wafer output comes the challenge of maintaining wafer quality during storage. This is where specialized solutions like EJER Tech's N2 Cabinet come into play. The cabinet provides precise nitrogen-purged storage with humidity and oxygen control, preventing oxidation and contamination of bare wafers and processed dies, ensuring yield stability during high-throughput periods.

To implement a robust wafer storage strategy, foundries should integrate such cabinets directly into their fab logistics. The key steps include: assessing storage capacity requirements based on planned wafer starts, selecting cabinets with real-time monitoring and automated humidity/O₂ regulation, and training operators on handling protocols. By combining aggressive capacity expansion with smart wafer storage, the automotive chip industry can better navigate the supply-demand gap in the coming years.