High density interconnect (HDI) technology for printed circuit boards (PCBs) offers an innovative solution for enhancing the functionality of a PCB through the optimization of available space, creating a higher density of overall circuits on the board. As the market demands faster and more reliable electronics, HDI technology is increasing in importance for the development of new products.

Redstar Worldwide supports our customers with design and engineering support, delivering advanced functionality and manufacturability of printed circuit boards with cost in mind.

Benefits of HDI Technology Solutions

HDI technology has evolved in response to ever-changing consumer demands. With HDI technology, designers have the ability to incorporate more components on each side of a raw printed circuit board. Using multiple processes and technologies to create smaller components and place vias more efficiently, more real estate is available on the printed circuit board. As components can be placed closer together, signals can be transmitted faster, providing significant reductions in crossing delays and signal loss.

Fabricating HDI Printed Circuit Boards

Redstar Worldwide guides our customers through the entire process of fabricating HDI PCBs. Our design and engineering support personnel assist with:

  • Material selection
  • Stack up simulation
  • Impedance modeling
  • Designing for manufacturability and assembly

Multiple materials may be used in the design of HDI PCBs, each selected for varying functionalities best suited for the end application. Materials may be chosen for coefficient of thermal expansion(CTE) performance, dielectric constant (Dk), as well as low- and ultra low-loss characteristics. Redstar Worldwide fabricates printed circuit board builds using standard materials, as well as:

  • Isola
  • Rogers
  • TUC
  • Megtron
  • Nelco
  • EMC

Finishing options for HDI printed circuit boards include:

  • Hard gold
  • Electroless nickel electroless palladium immersion gold (ENEPIG)
  • Electroless nickel immersion gold (ENIG)


PCB design may have myriad impacts on tolerances, which is where Redstar Worldwide’s assistance may be highly beneficial to our customers. Designs must incorporate the necessary functionality required by the end application while still allowing stringent manufacturing tolerances to be met.

Having a manufacturer with the proper advanced tools and experience can make all the difference in production time and product quality. We offer end-to-end services from prototyping to production.

Inspection and Testing

Redstar Worldwide provides customers with 100% electrical testing, first article inspection (FAI) reports, inspection reports, impedance coupons and certificates of conformity for HDI printed circuit board production. Our HDI printed circuit boards adhere to any of the following:

  • ISO 9001
  • ISO 13485
  • TS/ISO 16949
  • A S9100D
  • DOD/Mil-Spec/ITAR
  • ASTM Compliance
  • Automotive industry certifications
  • Medical industry certifications

HDI PCB Applications

HDI printed circuit boards manufactured by Redstar Worldwide serve a wide range of industries, including:

  • Aerospace
  • Military
  • Automotive
  • Medical
  • Computer
  • Industrial
  • Manufacturing

Within these industries, our HDI printed circuit boards support myriad critical processes. Our HDI PCBs can be found within:

  • Medical devices
  • Wearable devices and biometrics
  • Aviation and unmanned aircraft
  • Industrial measuring systems
  • Wireless communications
  • Satellite and broadcast systems
  • Internet of Things (IoT) connectivity technology
  • Smart glass
  • Solar technology
  • Green energy technology

Redstar Worldwide is committed to delivering high-quality products that meet our customers’ demanding needs. We always listen to our customers and determine their exact needs, helping us to produce the best solution for the intended application. We offer end-to-end solutions, from design through delivery, to help you meet your procurement goals while still allowing you to focus on your own core competencies.