The global AI boom is creating a significant bottleneck in the supply chain for essential electronic components, leading to longer waits and higher prices for everyone involved.
At its core, this issue stems from the incredible demand for powerful AI chips like GPUs. These advanced chips require equally advanced Printed Circuit Boards (PCBs) and packaging substrates to function. This has created a surge in demand for the high-quality raw materials needed to make them, but the supply of these materials simply can't keep up.
There are two primary causes for this bottleneck. First is the shortage of a special type of fiberglass cloth called T-glass. This material is crucial for making the high-performance substrates used in AI accelerators because it has low thermal expansion, preventing the chip package from warping. The problem is that supply is heavily concentrated with a single Japanese company, Nittobo. While Nittobo is building a new factory to increase capacity, it won't be fully operational and qualified for production until 2027. This means the current shortage is set to continue for some time.
Second, the cost of copper foil, another critical ingredient for PCBs, is rising sharply. Global copper prices have been hitting near-record highs. Since copper foil accounts for a large portion of the cost of a Copper Clad Laminate (CCL)—the base material for a PCB—foil producers are passing these higher costs directly to their customers. This has resulted in double-digit price increases for laminates, adding further pressure to the supply chain.
In response to this difficult situation, material suppliers have been forced to take defensive measures. They are now implementing allocation systems, essentially putting customers on a quota, and extending their lead times to as long as six months. This isn't about punishing customers; it's a rational strategy to manage scarce resources, prevent hoarding or double-booking, and ensure a more predictable supply for mass production. This supply crunch for advanced PCB materials is likely to define the market for the remainder of 2026.
- Glossary -
- PCB (Printed Circuit Board): The green board found inside most electronic devices, which connects and holds electronic components like chips and resistors.
- CCL (Copper Clad Laminate): The foundational material used to create PCBs. It consists of a laminate sheet, typically made from fiberglass and resin, with a thin layer of copper foil bonded to one or both sides.
- Lead Time: The total time elapsed from the moment a customer places an order to the moment the product is delivered.