Does anyone have an update on the work of this committee? Where can I find the draft of the document (I searched both D33 and Via Protection and couldn't find it)? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Susan Mansilla Sent: Wednesday, September 15, 2004 6:03 AM To: [log in to unmask] Subject: Re: [TN] Question about via masking on BGA pattern... Hi Steve We spend a lot of time on failure analysis of these little cups full of acid and the resulting etching out of hole wall copper. IPC has a committee now almost ready for a round robin of the various types of tenting/capping/plugging etc methods. It is D33-d Via Protection. You can go to the IPC website and look at the draft of the document we are working on at this time. If you go to 2221A para 4.5.1 it tells you the vias have to be tented on both sides. Susan Mansilla Robisan Lab --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------