Frank,

Before I can answer, does normal touchup fix these joints quickly using an
RMA flux? Or is there considerable effort to get these pads to flow?


Bill Kasprzak
Moog Inc, Electronics Process Engineering


-----Original Message-----
From: Frank L Norman [mailto:[log in to unmask]]
Sent: Tuesday, July 29, 2003 10:37 AM
To: [log in to unmask]
Subject: [TN] PICTURES: Wave solder process gone bad


Technet,

PWA's experienced solder wetting difficulties to plated through holes
including via's during the wave solder process. PWA's are two sided
multilayer finished with Electroless Nickel Immersion Gold (ENIG). Top
side SMT components were reflowed and bottom side SMT and through hole
components were wave soldered.

SEE PICTURES of bottom side of PWA at this website.

http://www.ripus.com/images/pwa/index.htm

Does anyone know what may have caused this issue?

Regards,
Frank Norman
Manufacturing Support Engineer
Raytheon, Space and Airborne Systems (SAS)
(805)879-2745
[log in to unmask]

---------------------------------------------------
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
-----------------------------------------------------