Subject: | |
From: | |
Reply To: | TechNet E-Mail Forum. |
Date: | Mon, 22 Jul 2002 09:28:29 -0500 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Congratulations. Sounds like you are the proud owner of Black Pad Disease or
better known as Black-line Nickel (BLN), an unpredictable low-level defect
of ENIG. It has been traced to electroless nickel plating bath contamination
by uncured soldermask, although I'm not convinced this is the only cause.
Good Luck,
Bruce Misner
> ----------
> From: Marki Sasportas[SMTP:[log in to unmask]]
> Reply To: TechNet E-Mail Forum.;Marki Sasportas
> Sent: Monday, July 22, 2002 8:03 AM
> To: [log in to unmask]
> Subject: [TN] Au-Ni coating
>
> Hello All,
>
> I have problem in BGA rework, In some cases after, heating specific zone
> on
> the board ( gold finish)
> A near BGA joints are being defected. After taking off this BGA I noticed
> that some of the pads are black,
> What can cause the problem?
>
> Thanks in advance,
> Sasportas Marki,
> CreoScitex Corporation Ltd.
>
> --------------------------------------------------------------------------
> -------
> Technet Mail List provided as a free 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/html/forum.htm for additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
> ext.5315
> --------------------------------------------------------------------------
> -------
>
---------------------------------------------------------------------------------
Technet Mail List provided as a free 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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------
|
|
|