High-Density Interconnected Printed Circuit Boards (HDI PCB) are new technologies that have revolutionised the applications and benefits of modern electronic devices. As of November 2017, 56% of circuit board manufacturers were using HDI technology.

With HDI, electronic products have become smaller, more powerful and more effective. This is because the technology has made it possible for denser circuit boards to be designed. When PCBs are fitted with more components (that are in close proximity to each other), the end result is increased efficiency and cost savings.

HDI boards consist of higher density wiring per unit area. You will often notice finer spaces and lines, as well as capture pads and connection pads with a higher overall density. HDI PCBs have many different benefits and applications, some of which include:

1. Better size to performance ratio

In the past, most electronic items such as video cameras, phones, and computers were large and cumbersome to handle. These items are now equipped with HDI PCBs which can fit more components into a smaller surface area. As a result, you can enjoy smaller electronics with faster speeds and better performance.

HDI technology has paved way for smaller sizes but higher frequencies. They're designed to include high-frequency transmission capability and a decreased level of redundant radiation. In this way, the board can be made denser without increasing its surface area.

2. Improved electrical performance

With higher density circuits boards, electrical components can be placed closer together and allow for easier flow of current. HDI boards work through buried or blind vias that have small overall diameters. This allows manufacturers to use a multi-layering strategy where vias can be stacked, staggered, or buried.

With this new structure, signals can be transmitted faster without delays or loss of strength.

3. Increased functionality

HDI technology has resulted in devices that can carry out many different functions. In addition to smaller devices (such as phones) being faster and having more storage space, they can also be used as cameras, GPS devices, internet browsers, and much more. HDI PCBs have made it possible for a wide range of features to be placed in smaller devices.

4. Denser BGA and QFP packages

With HDI technology, BGA and QFP packages are denser and more useful. These packages can be multilayered and fitted with add-ons that make individual devices more powerful.

Because BGA and QFP packages are often square or rectangular in shape, their design makes it more convenient for HDI to be used in improving performance. If you want to learn more, reach out to an electrician.