IC Substrates & UHDI PCB Design

Advanced IC substrate and ultra high-density interconnect PCB design solutions

IC Substrates & UHDI PCB Design

At the forefront of electronics miniaturization and system integration, Eternawave specializes in IC substrate and Ultra-High Density Interconnect (UHDI) PCB design. These technologies are essential for advanced semiconductor packaging, chiplet-based systems, and compact devices requiring the highest interconnect density and performance.



Advanced IC Substrate Solutions

  • Design of Multilayer IC Substrates: Enabling high-speed, high-reliability connections between microchips and PCBs, our IC substrate designs feature finely routed lines, microvia architectures, and high-performance materials for superior electrical performance and thermal stability.
  • Material Expertise: We recommend and implement advanced materials such as BT resin, high-Tg polyimide, and premium ceramics for exceptional mechanical strength, low CTE, and support for demanding environments.
  • Collaboration & Customization: Our process ensures tailored stack-up planning and routing for each application, from standard silicon interposers to 2.5D/3D designs, focused on manufacturability and scalability.



Ultra-High Density Interconnect (UHDI) PCB Design

  • Extreme Line/Space Precision: UHDI PCBs with sub-30μm line/space, built with advanced processes like mSAP, laser direct structuring, and photolithography, providing unmatched trace accuracy and integration capability.
  • Microvia Technology: Laser-drilled microvias (<0.1mm) and stacked vias-in-pad for ultra-dense, multi-layer routing, ideal for next-generation wearables, RF modules, and high-speed computing.
  • Embedded Component Integration: Support for system-in-substrate, in-embedded passive/active devices, and enhanced performance with reduced footprint and improved signal integrity.



Why Choose Eternawave?

Performance-driven designs for AI, data center, medical, aerospace, and high-speed communication applications

Early co-design and DFM workflow with leading fabrication partners to ensure high yield and scalability

Proven expertise in heterogeneous integration, chiplet packaging, and advanced substrate technologies

IC Substrates

Need IC substrate or UHDI design expertise?

Contact Eternawave to unlock new capabilities with IC substrate and UHDI PCB design—where extreme density, reliability, and advanced integration meet next-generation innovation.

Contact Our Team