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How Orthogonal Routing Reduces Crosstalk in PCB Stackups

Education

Altium Develop brings your entire team into the PCB design process with real-time collaboration across layout, sourcing, and manufacturing—so signal integrity issues like crosstalk get caught early: https://www.altium.com/develop?utm_source=youtube&utm_medium=video&utm_campaign=altium-academy-shorts&utm_content=how-orthogonal-routing-reduces-crosstalk-in-pcb-stackups When two traces run in parallel on adjacent internal layers, their wide faces overlap and create broadside coupling—a high-capacitance arrangement that drives far more crosstalk than coplanar traces routed side by side. In this short, we break down exactly why broadside coupling happens, how layer spacing in your stackup (like 45 mil separation in a 62 mil build) affects coupling strength, and why a ground-signal-signal-ground arrangement still carries real crosstalk risk on busy digital boards. The fix is orthogonal routing: turning the traces so they cross rather than run together minimizes the overlap between conductors, slashes the broadside coupling, and keeps crosstalk under control. Whether you're laying out high-speed digital signals or just want cleaner internal layers, understanding how trace geometry and stackup work together is essential signal integrity knowledge for any PCB designer. 💡 Stay Connected: Don't forget to like, comment, and subscribe for more in-depth tutorials and tips from @AltiumAcademy Share your thoughts and questions in the comments below! 👉 Subscribe for more: https://www.youtube.com/@AltiumAcademy?sub_confirmation=1 Don't forget to follow us on social to stay up-to-date on the latest Altium Academy content. 👉 Follow Altium on TikTok: https://www.tiktok.com/@altiumdesigner 👉 Follow Altium on Twitter: https://twitter.com/altium 👉 Follow Altium on Linkedin: https://www.linkedin.com/company/altium/ 👉 Follow Altium on Facebook: https://www.facebook.com/AltiumOfficial/ The Altium Academy is an online experience created to bring modern education to PCB Designers and Engineers all across the world. Here you can access a vast library of free training and educational content covering everything from basic design to advanced principles and step-by-step walkthroughs. Join industry legends as they share their career knowledge, review real-life design projects, or learn how to leverage one of Altium's leading design tools. No matter your level of experience, the Altium Academy can help you become a better Designer and Engineer! About Altium LLC Altium LLC (ASX:ALU), a global software company based in San Diego, California, is accelerating the pace of innovation through electronics. From individual inventors to multinational corporations, more PCB designers and engineers choose Altium software to design and realize electronics-based products. #Altium #PCBDesign #SignalIntegrity

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brenda.padilla 1 week, 4 days ago

Very curvy, looks cool. Not for high density though.

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josué_costela 1 week, 4 days ago

Now I see this after I ordered my first board 😒

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maríadelcarmenuribe801 1 week, 4 days ago

what are the differences for linear vs rounded traces like the ones shown in here?

S
sallysimmons345 1 week, 5 days ago

I've never thought about the difference between coplanar and broadside crosstalk interesting

E
enzogabriel_pacheco 2 weeks ago

Altium Develop brings your entire team into the PCB design process with real-time collaboration across layout, sourcing, and manufacturing—so signal integrity issues like crosstalk get caught early: /develop?utm_source=youtube&utm_medium=video&utm_campaign=altium-academy-shorts&utm_content=how-orthogonal-routing-reduces-crosstalk-in-pcb-stackups