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Subject: Routing signals under RJ45 connector
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Lakshmanan
Posts: 3
Online: User is Offline
7/02/2008 8:46 AM  
Greetings to all

                       Can anyone explain the reason as to why should we not route signals under RJ45 connector.What is the specific reason.Thanks in advance
Randy R.
Posts: 52
Online: User is Offline
7/02/2008 8:57 AM  
Couple of possiblities I can think of:
1) If you're referring just to the external layer on the same side of the board as the connector, then the connector body might be touching down on the board and if it's metal it could eventually penetrate the soldermask and short the external traces together.
2) EMI (Electro-Magnetic Interference) between the connector and nearby traces.

G'Day,
bluecad
Posts: 16
Online: User is Offline
7/08/2008 1:30 AM  
If you are using RJ45 without magnetics , you could route signals. But not with magnetics because EMI coupling from magnetics to signals like crosstalk. You can read smsc or davicom app notes. There are good design practices about routing Ethernet based products.

FERHAT
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Forums > Silicon-package-board > PCB Design > Routing signals under RJ45 connector


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