Millennium Circuits Limited

High Density Printed Circuit Boards

High-density interconnect (HDI) printed circuit boards (PCBs) are an increasingly integral part of the PCB and electronics industries. Electronic components are becoming smaller and more lightweight but still demand ever-improving performance. To accommodate this, you need to pack more functionality into a smaller area. That’s precisely what HDI PCBs offer.

HDI PCBs have a higher circuitry density per unit than conventional PCBs. They use a combination of buried and blind vias, as well as microvias — those that are 0.006″ or less in diameter. High-density circuit boards are PCBs with one or more of the following features:

• Through vias and buried vias
• Through vias from surface to surface
• At least two layers with through vias
• Coreless construction with layer pairs
• Passive substrate constructions that have no electrical connection
• Alternative constructions of coreless builds with layer pairs

HDI technology in printed circuit boards and other areas has been a critical driver for developing many of the electronics we use today, especially those that have decreased substantially in size and weight in recent years. The smaller the equipment gets, the more likely it is to employ HDI technology.

The tight tolerances involved in working with HDI printed circuit boards means you need to partner with an experienced supplier. Even a small defect or layout mishap can cause significant problems. As a leading HDI printed circuit board supplier, Millennium Circuits Limited can deliver top-quality boards that have a significantly higher circuitry density than your traditional PCB.