IPC International Community magazine an association member publication
Issue link: https://iconnect007.uberflip.com/i/1543955
78 I-CONNECT007 MAGAZINE I MARCH 2026 TA RG E T C O N D I T I O N T he concept of flooding PCB layers with copper has been around for so long, you'd think we'd have it mastered. We haven't. (Oh, and by "we," I mean design engineers and the software tools we depend on.) Years ago, PCB artwork was created by hand using light tables, with tape applied to Mylar. Signals were slow, traces were relatively wide, and high-current paths were simply "beefed up" with wider copper. Signal integrity wasn't yet a driving concern. Today, solid return paths are fundamental to robust design. We understand the importance of continuous reference planes for signal integrity and EMI control. Yet in many workflows, copper flooding is still treated as an automated click, rather than as a consideration that must not only perform electrically but also be fabricated by our F E AT U R E C O LU M N BY K E L LY DAC K , C I T C I D + AN EXPLORATION OF Flooding PCB Layers