3M Get the pressure right Temperature is critical Do not over compress the material John Burke (408) 515 4992 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Tim Mack Sent: Thursday, May 08, 2008 1:21 PM To: [log in to unmask] Subject: [TN] ACF/ACA Flip Chip Assembly Hello TechNet, Since tomorrow is Friday I thought I better get this out today. I have a bare Si flip chip with plated gold bumps that I need to attach to an ENIG finished FR-4 PCB (the PCB can be changed if ENIG is a bad idea). My plan is to use Anisotropic Conductive Film/Adhesive (ACF/ACA) to produce the interconnects. The chip itself has a 3x4 bump array with a 275 µm pitch. Does anyone here know of vendors for this material? Past experience do’s or don’ts? Any info would be appreciated. Thanks, Tim Mack Research Engineer NDSU Center for Nanoscale Science and Engineering <http://www.ndsu.nodak.edu/cnse> www.ndsu.nodak.edu/cnse --------------------------------------------------- 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 -----------------------------------------------------