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8 Chapters
8 Chapters

This HDI PCB Design Guide will help you:

  • Plan your stack-up and microvia structure
  • Choose the right materials
  • Manage signal integrity and controlled impedance in your design
  • Design considerations when manufacturing higher yields

Whether you’re designing PCBs to send to space, prototyping the next wearable device, or developing innovative medical equipment, more industries are relying on HDI everyday and it doesn’t have to break the budget.




HDI PCBs are characterized by their high density of components and routing interconnections, using the latest design and manufacturing technologies.

An HDI PCB is a high-performance board that takes advantage of

  • Laser microvias
  • Blind and buried vias
  • Fine lines and spaces
  • Via-in-pad technology
  • Built-up and sequential PCB laminations
  • Fine pitch devices down to 200 microns




  • Have a plan for your PCB stack-up and microvia structure
  • Will your material meet your temperature and electrical requirements?
  • HDI stack-up classes
  • Manufacturing considerations for higher yields
    • Drill-to-copper
    • Surface finishes
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Sierra Circuits PCB Certifications & Registrations

Sierra Circuits holds IPC-6012, IPC-6013, IPC-6015, IPC-6018, and IPC-A-600 PCB certifications
Sierra Circuits is ISO 9001:2015 certified for Military and Aerospace PCBs
Sierra Circuits is ISO 13485:2016 certified for Medical Device PCBs
Sierra Circuits is ITAR Registered
Sierra Circuits holds MIL-PRF-55110 & MIL-PRF-31032 PCB certifications
Sierra Circuits is certified by the National Institute of Standards and Technology
Sierra Circuits is REACH Compliant for PCB certifications
Sierra Circuits is RoHS Compliant for PCB certifications
Sierra Circuits holds PCB certifications for Flex, Rigid-Flex, and Rigid PCBs by the Underwriters Laboratory



Sierra Circuits has been trusted by innovators as a go to resource for best in class circuit boards since 1986.

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Since 1986, Sierra Circuits has faithfully served more than 20,000 PCB designers and engineers with PCB design, manufacturing and assembly and High-Density Interconnect technology.

Sierra Circuits handles all aspects of PCB production. From PCB layout and design, to assembly and manufacturing—we provide our customers with unprecedented quality, reliability, and a single point of support.

Advanced PCBs
PCBs manufactured and assembled in the United States



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