What is HDI? Learn about High Density Interconnect PCBs: microvias, layer stackup, advantages and applications.
What is HDI?
HDI (High Density Interconnect) refers to PCBs with particularly fine structures, microvias and high interconnection density.
HDI PCBs feature finer traces, smaller vias (microvias) and tighter spacing than standard boards. They enable more complex circuits in less space and are essential for fine-pitch components and high-pin-count BGAs.
Process and Application
Typical HDI features include trace widths below 100 µm, laser-drilled microvias, stacked or staggered vias and sequential lamination. Used in smartphones, wearables, medical devices and high-end industrial electronics.
Frequently Asked Questions
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