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September 2010

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Subject:
From:
Rex Waygood <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Rex Waygood <[log in to unmask]>
Date:
Mon, 13 Sep 2010 08:23:32 +0100
Content-Type:
text/plain
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Dear Chris
My advice is to read the scope and purpose of IPC7095 (then put it away
:-) ) and then use IPC-A-610 RevD 8.1.12 for the right emphasis on BGA
voiding.
Regards
Rex


Rex Waygood
Technical Manager
 
Hansatech EMS provides value manufacturing through engineering and
quality
 
Hansatech EMS Limited
Benson Road
Nuffield Industrial Estate
Poole
Dorset
BH17 0RY
 
+44 (0)1202 338200
  

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Chris Mahanna
Sent: 10 September 2010 15:31
To: [log in to unmask]
Subject: [TN] 7095 BGA void criteria

Regarding process evaluation vs. ongoing process control (table 7-7 and
7-8):
Has anyone run across the fact that for the larger pitches the process
evaluation size requirement is looser (45% vs. 40%), while for the
smaller pitch it is tighter (32% vs. 35%-which I think is correct)?
Typographical error?

Chris



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


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