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February 2014

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Subject:
IPC-2221B page 99 Table 9-4 for blind vias
From:
Larry Brophy <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Larry Brophy <[log in to unmask]>
Date:
Thu, 20 Feb 2014 12:28:12 -0600
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I have a Class 3 design that I need to use a blind via that has a finished hole size of 6mil but in IPC-2221B page 99 Table 9-4 for blind vias, Class 3 minimum is 7.87mil  

Is there any way to use an 6 mil via and still be Class 3?

Many thanks,

Larry

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