Hi Lee - assuming that the 90/10 solderball is attached using Sn63Pb37 (which is typically the situation), I would use my normal Sn63 solder protocols! Dave Hillman Rockwell Collins [log in to unmask] Lee Whiteman <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 03/10/2010 04:14 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to [log in to unmask] To [log in to unmask] cc Subject [TN] 90Pb / 10Sn SOLDER BALLS If you had to re-ball a BGA with 90Pb/10Sn non-collapsible solder balls, what would your peak temperature be? For reflow soldering processing purposes, what would your peak temperature be? If it was eutectic SnPb, I would anticipate the peak temperature to be about 215C for re-balling and reflow soldering. Lee Whiteman, PMP Senior Member Engineering Staff L-3 Communications East Telephone: (856) 338-3508 FAX: (856) 338-2906 E-Mail: [log in to unmask] ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- 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 -----------------------------------------------------