High density interconnect boards, commonly called HDI boards, represent the pinnacle of PCB miniaturization. With microvias smaller than a human hair and ball grid array packages hiding hundreds of solder joints beneath a component the size of a fi...
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The semiconductor industry keeps shrinking feature sizes while packing more functionality into each chip. The result: Ball Grid Array packages with pitches of 0.4mm, 0.3mm, and even 0.2mm, mounted on HDI substrates that route signals through microv...
https://www.high-density-interconnect-pcb.comhttps://www.high-density-interconnect-pcb.com/hdi-pcb-design-testing/overcoming-the-challenges-of-testing-fine-pitch-bga-on-hdi/