Cohu Inc. has received multiple orders totaling approximately $5 million from a leading semiconductor manufacturer for its Diamond X test platform, targeting gallium nitride (GaN) power devices used in AI data-center power architectures. The orders signal growing demand for high-precision test infrastructure as data-center operators shift to GaN-based power conversion to manage escalating power densities and thermal constraints.
Market Context
The orders expand Cohu’s position in the AI data-center market, where rising server power densities are driving a fundamental re-architecture of power delivery. GaN power devices offer significant efficiency and power density advantages over traditional silicon-based solutions, making them central to next-generation AC–DC front-end conversion, high-voltage DC–DC modules, and advanced point-of-load power management ICs. Cohu’s Diamond X platform is designed to support the full GaN adoption lifecycle, from early device characterization through high-volume production.
Technical Capabilities
The Diamond X platform delivers high-current capability, ultra-low resistance measurement accuracy, and scalable multi-site throughput. These features are critical for testing GaN devices, which require precise characterization of low on-resistance and high switching speeds. The platform’s configurations enable both development-stage validation and production-level testing, addressing the stringent performance requirements of AI accelerator nodes and high-performance processors.
Manufacturing Implications
As AI data centers push power densities higher, thermal constraints and efficiency targets are tightening. Cohu’s investment in advanced power test architectures aligns its roadmap with customer needs across AI infrastructure, as well as industrial and automotive electrification markets. The company’s ability to deliver accurate, economical testing at scale positions it to capture further share in the rapidly expanding GaN ecosystem.
Conclusion
Cohu’s $5 million order for GaN power device test systems underscores a broader industry pivot toward wide-bandgap semiconductors in AI infrastructure. As data-center operators prioritize efficiency and thermal management, demand for specialized test platforms will intensify. Cohu’s Diamond X platform is well-positioned to support this transition, bridging the gap between GaN device development and high-volume deployment across multiple high-growth markets.
