Billion-Dollar Deal Locks in AI Server Opportunities
In May 2026, Samsung Electro-Mechanics announced a long-term supply agreement worth approximately $1 billion for silicon capacitors with a major global customer, with deliveries spanning from 2027 to 2028. This collaboration not only reflects the strategic importance of silicon capacitors in the AI server and high-performance computing (HPC) sectors but also underscores the rapid growth in demand for power integrity. Samsung Electro-Mechanics further revealed its strategic direction to integrate silicon capacitors, multilayer ceramic capacitors (MLCCs), and packaging substrates to address the challenges of package-level power management.
As the performance of AI servers continues to improve, the thermal design power (TDP) of GPUs continues to rise, leading to increasingly stringent requirements for power stability. To ensure computational stability, key components such as Power Shelves, voltage regulator modules (VRMs), DC-DC converters, and OAM boards require a large number of MLCCs for filtering and voltage regulation. However, as AI accelerator platforms evolve toward chiplet architectures, high-bandwidth memory (HBM), and high-density advanced packaging, the challenges of power integrity have extended from traditional PCB boards to the interior of packages.
In multi-die architectures, a GPU may consist of multiple modules, including compute dies, I/O dies, and NVLink I/O dies, along with HBM, silicon interposers, and packaging substrates, forming a high-density system. Each die and power domain requires an independent and fast-responding decoupling network to handle instantaneous current changes. TrendForce indicates that in such architectures, relying solely on board-level MLCCs may result in excessively long current paths, with parasitic inductance limiting transient response speed and potentially affecting system stability.
Silicon Capacitors Offer Technical Advantages to Address Traditional MLCC Limitations
Silicon capacitors utilize a silicon substrate with silicon oxide or silicon nitride thin films as the dielectric, manufactured through semiconductor processes, and feature low equivalent series inductance (ESL). Compared to MLCCs, which rely on ceramic dielectrics and multilayer stacking of metal electrodes, silicon capacitors align more closely with semiconductor device manufacturing logic. Through thin-film deposition and deep trench structures, they achieve higher capacitance density and lower parasitic effects. This allows silicon capacitors to be deployed near the die within the package, shortening current paths and rapidly compensating for instantaneous current demands to maintain power stability.
In high-load scenarios involving AI GPUs, CPUs, ASICs, and HBM, the low ESL characteristics of silicon capacitors effectively address rapid current changes, making them a critical complementary component for package-level power integrity. The $1 billion long-term agreement signed by Samsung Electro-Mechanics not only validates the growth potential of the silicon capacitor market but also demonstrates the proactive positioning of the supply chain. While MLCCs remain the mainstream choice for power management, the application prospects of silicon capacitors in high-performance computing have gained industry recognition.
As the requirements for power stability in AI servers and HPC systems continue to rise, the complementary relationship between silicon capacitors and MLCCs will become increasingly evident. The combination of both will drive the capacitor market into a dual-track development phase, meeting the growing demands for power integrity. Samsung Electro-Mechanics' strategic positioning lays the foundation for the application of silicon capacitors in AI servers and is expected to attract more supply chain players to invest in the research, development, and production of related technologies.
