Louis,

+/- 10% is standard.  Also, as with most issues like this, I suggest you
discuss your needs with your PCB fab shop.

Ray


-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of Louis T
Dallara
Sent: Wednesday, June 27, 2001 3:27 AM
To: [log in to unmask]
Subject: Re: [DC] [pcdlist] RE: controlled impedance

Do any one know what the type tolerance is for a controlled impedance board?
+/- 1% of a 100 ohm trace??
TIA
Lou Dallara
Infincon Systems

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