MMaggie WangOct 13 · 5 min readHow to Choose the Right HDI Order: 1-N, 2-N, Any-Layer—Higher Isn't Always BetterIn PCB design reviews, one question comes up again and again: how many orders of HDI does this board need? The answer is usually one of two extremes: "Let's try 1-N first," or "Just go any-layer, to banypcba.hashnode.dev
MMaggie WangOct 9 · 6 min readVia Stub Effects and Back Drilling in High-Speed PCBs: An SI Fundamental Every Hardware Engineer Should KnowIn high-speed digital design, signal integrity problems often hide in the least obvious places—vias. As signal rates move from 10Gbps to 25Gbps, 56Gbps, and even 112Gbps, an ordinary through-hole via anypcba.hashnode.dev