I have seen the same thing. I found out that the majority of terminals with this problem were Tin plated, not Tin/Lead. We used silver plated on one program and had no problems at all. Also are you sure they are brass? We have had terminals made of bronze, these tend to split badly and the tin/lead plating sometimes cracks. -----Original Message----- From: Kerr, Bryan [mailto:[log in to unmask]] Sent: Wednesday, September 15, 2004 9:35 AM To: [log in to unmask] Subject: [TN] HMP Solder Joint Cracking Hi We are fitting a swaged turret terminal and soldering using 96% Tin 4% Silver alloy and have experienced cracks running around the edge of the swage solder joint - between the pin and the solder. Re-soldering gets rid of it in most but not all cases. I have thought that perhaps some stress relaxation is occurring in the swage area (brass base material) during soldering resulting in these cracks. Can anyone shed any light on this problem ? Cheers Bryan Kerr Principal Quality Engineer Process and Materials Laboratory AMS Hillend ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------