Sefika No, no problem at all. Lead free components have been used for many years already whithout the knowledge of teh people using them. The only problem might be with BGAs. However, it is questionable if there are any reliability problems or not. Best regards Guenter EMPA Swiss Federal Laboratories for Materials Testing and Research Centre for Reliability Guenter Grossmann, Senior Engineer 8600 Duebendorf Switzerland Phone: xx41 1 823 4279 Fax : xx41 1 823 4054 mail: [log in to unmask] >>> [log in to unmask] 06.06.2005 10:59:44 >>> Hi, Will it make a problem to assemle a lead free component to pcb with finish type hot air solder levelling (which consists of pb) and while using solder with pb? I am asking the question as a designer. I could not give the solder composition used while finishing the pcb and used while assembling. However if the information is needed I will try to find. Regards Sefika OZKAL Design Enginneer MGEO Division ASELSAN INC. Dikkat : Bu elektronik posta mesaj* ki*iseldir. E*er, gönderilmesi gereken ki*i de*ilseniz lütfen göndericiyi bilgilendirip mesaj* siliniz. Firmam*za gelen ve giden mesajlar virüs taramas*ndan geçirilmekte, hukuki nedenlerle log kay*tlar* tutulmaktad*r. Mesajdaki görü*ler ve bak** aç*s* göndericiye ait olup Aselsan A.*. resmi görü*ü olmak zorunda de*ildir. Attention : This e-mail message is private. If you are not the intended recipient please delete the message and notify the sender. E-mails to and from the company are, monitored for virus protection and in accordance with lawful business practices. Any views or opinions presented are solely those of the author and do not necessarily represent the views of Aselsan A.S. --------------------------------------------------- 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 -----------------------------------------------------