Do you all really believe in ug/cm2 ? The limits are said to be arbitrarily set. Uhhh..I'll get the whole academic world upset. /Inge -----Ursprungligt meddelande----- Från: TechNet [mailto:[log in to unmask]] För Brian Ellis Skickat: den 15 april 2008 17:35 Till: [log in to unmask] Ämne: Re: [TN] Ionic Contamination Question If you look through all the Technet archives, you may find an answer, but the two answers you will certainly find on this subject are: "It depends!" "How long is a piece of string?" I apologise if you think it unhelpful, but this is the best I can do. Brian Todd, Richard wrote: > Technet, > > I am receiving questions about the allowable limits of ionic contamination on our finished assemblies. I believe that J-STD-001D indicates that the allowable limit is 1.5 ug/cm2. Is this the same for both leaded and lead-free assemblies? Is there any other specification that details what the maximum acceptable limits for ionic contamination should be for finished assemblies? > > My customer won't take my word for it; I must provide industry-recognized evidence. > > Thank you in advance. > > Regards, > > Rick Todd > Senior Engineer > Panasonic Automotive Systems > > > --------------------------------------------------- > 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------