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April 2008

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Subject:
Re: layer to layer registration?
From:
Donald Vischulis <[log in to unmask]>
Reply To:
Donald Vischulis <[log in to unmask]>
Date:
Mon, 7 Apr 2008 21:04:10 -0500
Content-Type:
text/plain
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text/plain (46 lines) 
John,

How do you define layer to layer registration?  While this might appear to be a trivial question, if minimum annular ring and holding master artwork line widths within tolerance aren't sufficient to define your needs, what additional requirements have to be met?

Don Vischulis

-----Original Message-----
>From: "Murphy, John" <[log in to unmask]>
>Sent: Apr 7, 2008 12:13 PM
>To: [log in to unmask]
>Subject: [TN] layer to layer registration?
>
>Greetings, 
>
>                  Is it a good idea to specify layer to layer
>registration for Class II 
>
>multi-layer PCB's?  My searching thus far indicates it is not directly
>contained
>
>in any IPC specification (other than annular ring requirements) but
>relegated to 
>
>the Master Drawing. 
>
>
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Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
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