IC Substrate

AI and high‑performance computing workloads push IC substrates to their limits. Large dies and multi‑die packages need vast pin counts, high‑speed links to memory, clean power delivery, and robust thermal paths—all of which depend heavily on substrate design and materials. This article looks at how IC substrates support AI/HPC architectures, what design teams must consider for signal integrity, power, and heat, and how to choose between material systems like ABF, BT resin, ceramics, and emerging glass cores.

An IC substrate is a specialized carrier that sits between a bare chip and the main PCB, routing fine-pitch signals, delivering power, and helping manage heat in advanced electronic packages. This article explains what IC substrates are, how they differ from traditional PCBs, common materials and package types, and where they are used in real-world applications such as AI, 5G, automotive, and consumer electronics.