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September 2005

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Subject:
5% trace width control_RF
From:
sumxp <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, sumxp <[log in to unmask]>
Date:
Sun, 4 Sep 2005 01:30:05 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (20 lines) 
My customer told me that one of the RF pcb need to maintain the 5mils trace
width within 5% tolerance in order to achive 50 ohms impedance.
My pcb maker said they can only control at 20%(copper etching process
capability) trace width tolerance BUT can guarantee that the impedance is
at 50 ohms.
Please comment.Should I take the words of pcb supplier?

rgds
sumxp

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