This would be paste dependent and, it would depend on process factors, max allowed open jar life of the paste, max time between print, place and reflow come to mind. Starting March 1, 2007 New Location Guy Ramsey R&D Assembly 1660 East Race Street Allentown PA 18109-9580 (610) 264-1887 FAX (610) 264-1877 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Sklenar Vit (RBAU-AE/MFE3) Sent: Tuesday, February 06, 2007 8:19 PM To: [log in to unmask] Subject: [TN] Max Humidity allowed Hi Techneters, Please is anybody aware or can you refer me to any standard which addresses the maximum allowed humidity in electronic production in order to prevent microballs creation during reflow process? Thank you fro your reply Vit Sklenar Robert Bosch (Australia) Pty. Ltd. RBAU/MF33 - VS, Process Eng.) www.bosch.com.au Tel. +613 9541 7734 Fax +613 9541 3909 [log in to unmask] 2 --------------------------------------------------- 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 -----------------------------------------------------