HW Interview
SI-10 · Chapter 6 · Signal Integrity & Transmission Lines

Via stubs and back-drilling

Why does a via stub matter at high data rates? How do you fix it?

Level●● onsite technical
TrackSI & high-speed
Really testingQuarter-wave resonance.
Full worked answer: in the book, page 156 — what to say first, how to explain it, the numbers worth quoting and the follow-ups. About the book →

Going deeper

Extra explanation that is not in the book: worked numbers, where people go wrong, and how to say it in the room.

Going deeper for this question is coming.

Errata

No corrections known for this question. All errata

Ask about this question

Stuck on a step, or think something is wrong? Send it with SI-10 in the subject. Good questions get answered on this page, and corrections go into the next printing.

Ask about SI-10

Related

← SI-09 Loss above 1 GHzSI-11 Differential impedance, odd and even mode →