Hi Iona Definitely recommend Electroform stencil. I have a short Power Point Presentation that I can send you regarding stencil design and performance for .5mm uBGA. If interested email me at [log in to unmask] I will try to attach to this email. -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Tempea, Ioan Sent: Wednesday, March 16, 2005 11:05 AM To: [log in to unmask] Subject: [TN] Micro BGA Hi Technos, we are presently assemblying 0.65mm BGAs, with no issue. However, a customer asked about 0.5mm and how smaller can we get. We run pretty good equipment, MPM UP3000 printers and Fuji IP3 pick and place. Any insights you would have to share on that? I assume I would have to go for an electroformed stencil. But how is the printing anyways, any particular aperture shape? What about the rework, in case the assembly is expensive? Thanks, Ioan --------------------------------------------------- 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 -----------------------------------------------------