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Subject:
Re: minimum flex bend radius
From:
"Gumpert, Ben" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Gumpert, Ben
Date:
Tue, 2 Jun 2015 19:20:56 +0000
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Bill,

I get the same results as shown.

R = (100/2 + 35) * [(100-.3)/.3] - 75 = 28173 um


Ben

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Byrd, Bill J
Sent: Tuesday, June 02, 2015 1:34 PM
To: [log in to unmask]
Subject: EXTERNAL: [TN] minimum flex bend radius

Hello,

IPC-2223 contains an equation labeled 'Equation 2' for calculating the minimum bend radius for double-sided circuits with coverlay.  I wonder if I am missing something because when I plug in the values shown there as an example the 'R' value does not match what is shown there.  Any help would be appreciated.

Bill

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