Why Impedance Control Matters for Gigabit Ethernet

Published Time:

2026-02-10

Gigabit network jacks require strict 100Ω differential impedance control
Gigabit network jacks require strict 100Ω differential impedance control. Impedance mismatch causes signal reflection, crosstalk, speed degradation, and unstable connections. Professional PCB design ensures:
  • Controlled trace width and spacing
  • Equal length for differential pairs
  • Reasonable ground plane design
  • This ensures stable high‑speed transmission up to 1000Mbps.

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