IPC-600-6012 Archives

June 2010

IPC-600-6012@IPC.ORG

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IPC-600-6012<[log in to unmask]>
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Combined Forum of D-33a and 7-31a Subcommittees <[log in to unmask]>
Date:
Fri, 18 Jun 2010 11:30:23 -0700
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"(Combined Forum of D-33a and 7-31a Subcommittees)" <[log in to unmask]>
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Wendi,  I agree with you. 1,2,3 should have been the intent. Tom

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On Jun 17, 2010, at 3:30 PM, Wendi Boger <[log in to unmask]> wrote:

> Need clarification on the definition of Via Structures as is relates  
> to
> Microsection Requirements.
>
>
>
> 3.6.1.5 Microsection Requirements
>
>
>
>            ..... Evaluation of all applicable PTHs and vias, including
> blind and buried, for all such structures found on the finished  
> printed
> board shall be inspected in the vertical cross section in accordance
> with Table 4-3. ...
>
>
>
> If a board has 1-2 lasers and 1-2-3 stacked lasers is it correct to
> have 2 coupons one as 1-2 and one as 2-3.  Both drill cycles and  
> plating
> cycles are represented but the 1-2-3 total via structure is not.    
> Seems
> like the 1-2 and 2-3 only is bending the intent.
>
>
>
>
>
> Wendi
>
>
>
>
>
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