An Introduction to HDI PCB | Sierra Circuits
Channel: Sierra Circuits
Date: 26/06/2019

An HDI (High-Density Interconnect) architecture can save you time and money. But only if you know what you're doing! HDI is certainly not easy to master, however, as a PCB manufacturer, we can give you a few tips that will get you on the right track.

In HDI, as the term suggests, the density is very high in terms of lines and space. So you can accommodate more interconnections on a smaller surface, which will bring down the board thickness. Thereby, it reduces the aspect ratio. If we consider an aspect ratio of 1:1 when the lines and spaces are less than 4 mils, this is HDI. If the wires are less than 150 microns, then the capture pad is less than 400 microns, and again, this is also considered HDI. If you can count more than 20 pads per square centimeter, then you have 120-160 average pins per square inch. This is HDI.

What are the benefits of HDI compared to the traditional modes?
What type of technology you can adopt for HDI boards?
What are the advantages of using microvia interconnections? 
What is the best BGA panel strategy? 
How to breakout and route around a BGA? 

These are the main topics we discuss in this introduction to HDI video. We will also show you and study the standard buildups before we take a look at some of the pictorial presentations of HDI PCBs.

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THE PCB DESIGNER'S CORNER

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