May 20, 2026
In May 2026, the global PCB supply chain is experiencing an unprecedented material earthquake. Recently, a PCB manufacturer near Seoul urgently placed an advance order worth 10 billion KRW with two Taiwanese Copper Clad Laminate giants, EMC and TUC. To put this in perspective, this company's typical monthly usage is only 1.5 to 2 billion KRW; this single order is more than five times their regular volume.
The company's CEO helplessly admitted that in over 20 years in the industry, this is the first time they face the threat of a production halt due to an inability to buy Copper Clad Laminates. The order has been placed, but they have no idea when it will actually be delivered.
This is not an isolated case but a systemic crisis spreading across the entire industry. As the foundation of PCB manufacturing, the price and lead time of Copper Clad Laminates are surging at a staggering rate. For hardware teams, procurement managers, and R&D engineers currently conducting product development and mass production planning, failing to immediately adjust Bill of Materials strategies and supply chain expectations will lead to a desperate situation of having no boards to build and no goods to deliver in the second half of the year.
The panic in the supply chain is directly reflected in customs data and the capital market.
The instigators of this crisis are the currently booming AI semiconductor, data center, and autonomous driving industries. When we delve into the technological underlying layers, we find that the essence of this shortage is the cruel squeeze of high‑end material capacity on the low‑to‑mid‑end market.
High‑performance AI chips generate extreme heat during operation. To prevent PCB substrates from warping and deforming at high temperatures – which would fracture high‑density microcircuits – high‑end substrates must use Copper Clad Laminates based on T‑Glass, a glass fiber with a low Coefficient of Thermal Expansion.
Previously, T‑Glass was only used on a very small number of top‑tier chip substrates. However, as the thermal management requirements for AI server modules and massive memory substrates rise exponentially, the demand for T‑Glass has experienced explosive growth. Yet, the global supply of high‑quality T‑Glass is almost monopolised by a few giants like Japan’s Nittobo, who hold certifications from major tech companies. The growth in supply is lagging far behind the surge in demand.
Just when you thought you could stay immune by not making AI servers and sticking to ordinary consumer electronics or industrial control motherboards, reality deals a heavy blow.
Because the profit margins for high‑specification laminates are extremely high, global material manufacturers are rapidly tilting their limited production lines, resin raw materials, and pressing capacity toward these high‑value‑added products. This directly caused a massive reduction in the capacity of E‑Glass, a general‑purpose glass fiber previously abundant and used for low‑to‑mid‑priced products.
When gods fight, mortals suffer. Even ordinary FR‑4 general‑purpose boards are now facing severe indirect supply pressure. Many small and medium‑sized board factories are already facing the dilemma of production line shutdowns because they cannot obtain materials.
Under current conditions where freight rates are soaring – with some companies even forced to switch bulky substrates from sea freight to expensive air freight just to secure lead times – and materials are scarce, hardware development teams can no longer treat PCBs as standardised consumables available on demand. Facing the current extreme seller’s market, we need to establish defence mechanisms starting right from the R&D and design phase.
In the past, R&D engineers were accustomed to specifying a particular model of high‑frequency or high‑Tg laminate in the Bill of Materials, even noting that a specific part number from a specific brand must be used. Under the current circumstances, this is tantamount to supply chain suicide.
Response strategy: During the Engineering Verification Test (EVT) phase, layout engineers and signal integrity engineers must communicate deeply with the board factory to evaluate and verify at least two to three alternative materials with similar electrical performance. Before submitting for Design Verification Testing and various safety certifications, ensure that alternative materials are also included in the certification scope, granting the procurement side the flexibility to adjust during mass production.
At a time of extreme material scarcity, blindly pursuing redundant board specifications will cost you a painful premium and time.
Response strategy: If your product’s operating environment and heat dissipation needs are not extreme, please do not blindly follow the trend of using scarce boards with extremely high Tg or extremely low dissipation factors. Accurately evaluating the actual application scenario of the product and returning to the most mature material specifications with the highest market share can minimise the risk of material shortages to the greatest extent.
Lead times jumping from two weeks to six weeks or even longer means that the traditional Just‑in‑Time (JIT) procurement model has failed.
Response strategy: Do not wait until the Production Verification Test (PVT) is completed to place mass production orders. For key projects with clear volume plans, the procurement team needs to place long‑term orders or material preparation instructions in advance with a reputable PCB contract manufacturer that possesses large‑scale supply chain integration capabilities. Locking in the capacity of upstream material factories is far more important than merely fighting for processing fee discounts from the board factory.
Although some optimistic industry insiders believe that with the capacity expansion of material suppliers and the safety stock buffers of major PCB factories, it will not yet trigger an industry‑wide production shock. However, this shortage storm triggered by the AI wave has completely altered the ecological landscape of the supply chain.
Rising material costs and uncertain lead times will phase out companies with weak supply chain management. For excellent hardware development teams, deeply understanding the physical properties and market trends of upstream materials, and tightly binding Design for Manufacturing with supply chain security, is the strongest moat to cross this material crisis.
