IPC International Community magazine an association member publication
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MAY 2026 I I-CONNECT007 MAGAZINE 115 Continuous Verification Across the Flow Traditional workflows treat SI analysis as a late- stage checkpoint. By then, discontinuities are embedded. A connected design flow enables real-time evaluation of layout decisions, immediate identification of return path disruptions, and cross- domain analysis of SI, PI, and EMI interactions. This shifts SI from validation to design guidance. Bridging Domains: Electrical, Mechanical, Manufacturing Many return path issues originate outside electri- cal design, where mechanical keep-outs create plane voids, connector constraints force routing compromises, and manufacturing limitations affect via structures. A connected workflow makes these interactions visible early, enabling informed trade- offs and preventing unintended discontinuities. By embedding return path best practices into constraints and reusable methodologies, organiza- tions can: • Standardize high-speed design practices • Reduce variability across teams • Accelerate onboarding • Improve first-pass success rates This reduces dependence on individual exper- tise and increases predictability at scale. Conclusion In high-speed PCB design, electrical performance is not determined solely by the signal trace, but by the continuity, geometry, and integrity of its return path. The most advanced routing strategies, materials, and components cannot compensate for a broken return path or for a design process that allows those breaks to occur. By grounding design decisions in electromagnet- ic principles and reinforcing them through a con- nected, constraint-driven workflow, engineering teams can move from reactive problem-solving to predictable, scalable design excellence. Because in the end, successful systems are not defined by the paths you route, but by how well you preserve the paths you don't see. I-CONNECT007 Stephen V. Chavez is principal technical prod- uct marketing manager at Siemens EDA and chair of PCEA.