From experience -- wayyyyy back ----: Don't use solder coated pins for an interconnect, unless the number of insertions is very, very, very low and the contact pressure is very high. Seems unlikely in your case. Regards, Ahne PS: not in my airplane! -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Kevin Glidden Sent: Monday, 20 November, 2006 07:34 To: [log in to unmask] Subject: [TN] Tin - Lead Solder / Gold connector interface All, We are using a simple header connector (pin) and receptacle (socket) to make a board to board interconnect. The pins and socket are gold plated over 50 u-in Nickel, base material is phospor bronze. We normally pre-tin the tails for soldering to the PCB, and leave the interconnect areas gold. Operator mistakenly tinned both ends of the pi (using water sol flux and 63/37 alloy). This would result in a solder coated pin inside the gold plated receptacle. I couldn't locate anything in IPC-610 about this condition. Will it be acceptable? Operating voltage @ 28VDC. Avionics application. TIA, Kevin Glidden Manufacturing Engineer Astronics Luminescent Systems Inc. --------------------------------------------------- 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 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- 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 847-615-7100 ext.2815 -----------------------------------------------------