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| Date: | Mon, 20 Nov 2006 16:52:17 -0500 |
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If the contract assembly drawing requires the assembly to be conformal coated, unless it also allows the area under the BGA to be free of coating, then you are in violation of the contract drawing regardless of what 610 says or does not say.
----- Original Message -----
From: David D. Hillman<mailto:[log in to unmask]>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Monday, November 20, 2006 2:20 PM
Subject: Re: [TN] BGA and conformal coating
Hi Joe - Your statement......." type AR or type UR does not coat the BGA
solder balls/solder connections located under the BGA so you are violating
the acceptability requirements in IPC-A-610" has me some confused. What
IPC-A-610 requirement is violated?
Dave Hillman
Rockwell Collins
[log in to unmask]<mailto:[log in to unmask]>
"Macko, Joe @
IEC"
<joe.macko@L-3COM<mailto:joe.macko@L-3COM> To
.COM> [log in to unmask]<mailto:[log in to unmask]>
Sent by: TechNet cc
<[log in to unmask]<mailto:[log in to unmask]>>
Subject
Re: [TN] BGA and conformal coating
11/20/2006 12:47
PM
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]<mailto:[log in to unmask]>>
; Please respond
to
"Macko, Joe @
IEC"
<joe.macko@L-3COM<mailto:joe.macko@L-3COM>
.COM>
Vered,
I would start with IPC-A-610 and J-STD-001 documents. One item that is over
looked is that spraying a board with for example type AR or type UR does
not
coat the BGA solder balls/solder connections located under the BGA so you
are violating the acceptability requirements in IPC-A-610!
Good luck,
- Joe
-----Original Message-----
From: Vered BS [mailto:[log in to unmask]]
Sent: Monday, November 20, 2006 8:40 AM
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: [TN] BGA and conformal coating
looking for reviews/articles or case studies regarding conformal coating on
BGA
for military/aerospace environment
Appreciate any comment or sharing your experiance
Thanks
Vered
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