[SI-LIST] Ethernet Magnetic Jacks

  • From: "Youssef Khalife" <youssefk@xxxxxxxxxx>
  • To: <si-list@xxxxxxxxxxxxx>
  • Date: Thu, 16 Jan 2003 18:29:22 -0800

Hi everyone,
With the advent of the integrated 10/100 magnetic jacks (RJ45) is there a =
need to add an external plane capacitor with their 'built in'  1nF 2KV =
cap.  As we all know discrete capacitors are lousy at high frequency, due =
to lead inductance.  Will there be either any beneficial or negative EMI =
impacts?

Does anyone have clear answer regarding this issue for a low noise system?

Thank you
Youssef K
Design engineer
Motion Control Engineering, Inc.


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