--- title: "PCB Controlled Impedance - Phil's Lab #171" url: https://daily.dev/posts/pcb-controlled-impedance---phil-s-lab-171-g4kpfsalf source_url: https://www.youtube.com/watch?v=aNYmOIMt7CY type: video:youtube source: "Phil's Lab" published: 2026-05-31T07:45:27.481Z updated: 2026-05-31T07:57:34.702Z tags: ["hardware"] reading_time: 51 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # PCB Controlled Impedance - Phil's Lab #171 **[Phil's Lab](https://daily.dev/sources/phils-lab)** · 51 min read · 0 upvotes · 0 comments ## Summary A deep-dive into PCB controlled impedance covering the theory and practical implementation needed for high-speed digital hardware design. Topics include the maximum power transfer theorem, impedance mismatches and reflections, critical length calculations for both analog and digital signals, rise/fall time analysis and its impact on maximum frequency content, microstrip and stripline trace types, differential pair impedance, and practical considerations like manufacturing tolerances, skin effect, and communicating requirements to PCB manufacturers. Worked examples use real stack-ups, impedance calculators, and reference designs including DDR3, USB, and PCIe interfaces. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [When Electricity Doesn’t Take The Shortest Path](https://daily.dev/posts/when-electricity-doesn-t-take-the-shortest-path-hnnvxg3k6) · Hackaday · 0 upvotes · 0 comments --- Tags: [#hardware](https://daily.dev/tags/hardware) [View this post on daily.dev](https://daily.dev/posts/pcb-controlled-impedance---phil-s-lab-171-g4kpfsalf)