IPC-600-6012 Archives

November 2010

IPC-600-6012@IPC.ORG
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Subject:
Re: v-scoring
From:
Mike Hill <[log in to unmask]>
Reply To:
(Combined Forum of D-33a and 7-31a Subcommittees)
Date:
Thu, 4 Nov 2010 10:34:09 -0400
Content-Type:
text/plain
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text/plain (38 lines) 
Chris,

Our mechanical engineer also said a lot of folks use 1/3 the board thickness as the default for web thickness (ergo 14 mils), so based on that, 19 seems a little too thick.

Mike

-----Original Message-----
From: IPC-600-6012 [mailto:[log in to unmask]] On Behalf Of Chris Mahanna
Sent: Thursday, November 04, 2010 8:45 AM
To: [log in to unmask]
Subject: [IPC-600-6012] v-scoring

Hi all,
I know that this is a difficult question to answer without more information.  Anything would help.

On a 0.042" thick array of 5-up DIMM modules (very similar to the ones you use in your desktop computer), would you consider a 19 +/-1.5 mil web too thick and risky?
I see no indication of skip scoring.

Thanks,
Chris

Chris Mahanna
Robisan Laboratory Inc.
6502 E. 21st Street
Indianapolis, Indiana 46219
317-353-6249


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