 
| Subject: | |
| From: | |
| Reply To: | |
| Date: | Fri, 10 Sep 2010 13:27:22 -0400 |
| Content-Type: | text/plain |
| Parts/Attachments: |
|
|
Without the tables in front of you it is confusing, so allow me to clarify my question a little-
It appears to me that, for the large pitches, the "qualification" requirement was accidently made easier than the "process control" requirement.
Were as, with the smaller pitches, the qualification requirement is tighter than the process control.
But when lumped with the other requirements... I guess that it is not 100% clear that it was an accident.
Chris
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Chris Mahanna
Sent: Friday, September 10, 2010 10:31 AM
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
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
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
-----------------------------------------------------
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
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
-----------------------------------------------------
|
|
|
