Subject: | |
From: | |
Reply To: | |
Date: | Mon, 22 Nov 2004 13:18:30 +0200 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Hi Siggi,
I have asked this question in the past,
There is no magic number, its depend with the PCB complexity (layers count,
Tg, Td, ) , materials, quality, rework profiles, drying condition before
rework, cycles time etc.
I estimate (from experience ) that 6 thermal cycles are still OK.
Don't forget to inspect the PCB quality at the end of the process (not only
counting the cycles).
Best Regards
Reuven ROKAH
"Zweigart,
Siegmund" To: [log in to unmask]
<SiegmundZweigart@ cc:
HG.SLR.COM> Subject: [TN] BGA repairs
Sent by: TechNet
<[log in to unmask]>
22/11/2004 12:44
Please respond to
TechNet E-Mail
Forum; Please
respond to
"Zweigart,
Siegmund"
Hello
I read a IPC standard about BGA repair some months ago, but cannot get the
number.
I am looking for some statements how many BGA repairs were allowed on one
assembly (on different positions as well as on the same position).
Who can help?
Best regards
Siggi
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
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
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
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
-----------------------------------------------------
|
|
|