112G High-Speed PCB Manufacturing Capability Guide

2026-03-18

At 112G, tiny process drift stops being a detail and starts acting like a wrecking ball.

112G-class channels force PCB manufacturing into a very narrow tolerance window. PAM4 signaling, higher insertion loss sensitivity, tighter via behavior, and reduced eye margin mean that material choice and fabrication precision have to work together with almost obnoxious discipline.

This guide is built for engineers and sourcing teams assessing whether a fabricator can really support 112G interconnects. It links channel demands, low-loss materials, stack-up engineering, via control, modeling, test, and compliance into one practical reference for ultra-high-speed manufacturability.

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