Hi Sheila - a question - do you know that the voids are detrimental to
solder joint reliability? Also mixing of 95/5 with Sn62 is probably not
going to give you an intermetallic issue but you will probably get a
reeeaallly neat solder joint composition which will be very hard to predict
any type of properities data or even a simple melting point. If you must do
touchup why not use 95/5 as the touchup alloy? Soldering irons can melt
that alloy. Good Luck.
Dave Hillman
Rockwell Collins
[log in to unmask][log in to unmask] on 10/21/97 10:05:36 AM
Please respond to [log in to unmask]; Please respond to [log in to unmask]
To: [log in to unmask]
cc: (bcc: David D Hillman/CedarRapids/Collins/Rockwell)
Subject: [TECHNET] ASSY: Solder compatibility
Hello TechNet ..
Does anyone have any experience with possible intermetallics formation if I
use Sn62Pb362Ag to touchup voids in a Vapor phase reflowed Sn95Sb5 solder
joint ??? Especially after 100 temp cycles from -55C to 120C? Thanks for
any help!
Sheila Smith, Tracor AES
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following
text in the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or
847-509-9700 ext.311
##############################################################
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
##############################################################