Finish to what? Your career: potentially (especially if you have to rework every PB). The final surface finish of the PB substrate: it depends on the following: * ImAg is per IPC-4553 * Consumed in one year or less * Inventory system FIFO(first in, first out)instead of FISH (first in still here) * Proper storage and handling procedures in place * Minimize exposure to sulphur and moisture * Proper packaging (silver-saver sheets, desiccant, HIC) and shipping requirements for PBs and PBAs * Established compatibilities between materials and processes Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Kelly Sent: Tuesday, May 26, 2009 2:00 PM To: [log in to unmask] Subject: [TN] Immersion Silver Good Afternoon, Any concerns about using immersion silver as a finish. PWB has to take two reflow cycles, 1 re-work cycle and one hand solder after the two reflows. Parts have to be transported from one part of the country to another after the two reflows. Thanks. Steve Kelly Steve Kelly (PLEASE NOTE NEW E-MAIL ADDRESS) (416) 750-8433 (work) (416) 750-0016 (fax) (416) 577-8433 (cell) --------------------------------------------------- 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 -----------------------------------------------------