Dear Jana: Exposed bare copper (or basis metal) is allowed on electronic assemblies per IPC-A-610C Paragraph 6.5.2. Hope this helps. Gregg A. Owens Executive Director Manufacturing Technology Training Center, Inc. 10427 San Sevaine Way, Suite "I" Mira Loma, CA 91752 Phone: (909) 360-1324 Fax: (909) 360-1346 Website: www.mttc-inc.com -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jana Carraway Sent: Wednesday, July 17, 2002 3:48 PM To: [log in to unmask] Subject: [TN] Exposed copper in assemblies Happy Summer Greetings to all...and hopefully you are all unable to actually enjoy the weather because you're working! Is there current or recently current literature available on the evils, or not so evils, of exposed copper in assemblies? Any references to sources on this topic would be greatly appreciated. Thank You, Jana Carraway Micro Systems Engineering, Inc. ------------------------------------------------------------------------ --------- 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 ---------------------------------------------------------------------------------