Hi Ioan! Soldering to brass that does not have a barrier plating layer, 
such as copper or nickel, can result in solder joint integrity issues. 
There is the potential of the zinc in the brass diffusing into the solder 
joint causing a loss of solder joint integrity ("dezincification"). I 
recommend you either put a barrier plating layer on the item or assess the 
risk  of a loss of solder joint integrity on the functional performance of 
the unit in its use environment. Good Luck.

Dave Hillman
Rockwell Collins
[log in to unmask]




Ioan Tempea <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
02/18/2009 08:38 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Ioan Tempea <[log in to unmask]>


To
[log in to unmask]
cc

Subject
[TN] Soldering Alloy 260






Dear Technos,
 
Anybody has experience with soldering a piece of Alloy 260 (brass with 30% 
Zn) onto a PCB? Regular SnPb solder for now, might be RoHS soon.
 
The board finish specified by the client is ImAg? Any issues with that?
 
Also, the final product will be outdoors in the not so mild Montreal 
climate, -40C is regular in winter and +35C in summer, with tons of salt 
thrown on the streets to fight the snow. Any concerns regarding the 
compatibility of brass with the PCB?
 
Thanks
 
Ioan Tempea, ing.
Ingénieur Principal Fabrication / Sr. Manufacturing Engineer 
 
30 ans déjà! - Already 30 years!
950 rue Bergar, Laval, Québec, H7L 5A1
t : 450-967-7100 ext : 244
Mtl : 514-990-5762
f : 450-967-7444
[log in to unmask]
www.digico.cc <http://www.digico.cc/> 
P N'imprimer que si nécessaire - Print only if you must
 

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


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