((( nodding in agreement ))) Franklin ----- Original Message ----- From: "Jeffrey Bush" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, May 12, 2005 12:23 PM Subject: Re: [TN] board fab Just a note - most fabricators who are going to be alive over the next few year can do 2:1 pad to hole ratios. I caution that many folks in the high reliability area are surprised to find 90 degree breakout on vias when they were expecting 360 annular ring. Many pad sizes are now .016" with .008" drills and with via in pad to problem. When you need to protect a trace to pad connection this relationship gets slightly more difficult and more attention is need during fabrication. Jeffrey Bush Director, Quality Assurance and Technical Support VERMONT CIRCUITS INCORPORATED 76 Technology Drive - POB 1890 Brattleboro, Vermont 05302 Voice: 802.257.4571.21 Fax: 802.257.0011 http://www.vtcircuits.com -----Original Message----- From: Happy Holden [mailto:[log in to unmask]] Sent: Thursday, May 12, 2005 12:58 PM To: [log in to unmask] Subject: Re: [TN] board fab Deac, A .013" finished hole with a .024" pad is "STANDARD" fare for fabricators. We even get .013" FHS in .020" pads. We will make this without an additional charge but ask if we can switch to a .010" FHS to guarantee no breakout, otherwise, allow some breakout on holes (no more than a mil). We are starting to see more and more 0.018" pads on BGAs- so times-are-changing! Happy Holden Westwood Associates Deac Descoteaux <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 05/12/2005 12:27 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Deac Descoteaux <[log in to unmask]> To [log in to unmask] cc Subject [TN] board fab All! We have a customer that has had a design that we did quoted for 1000 pieces by a fab vendor. We have a .013 finished hole with a .024 pad. We're saying that that is not a DFM problem. Any "GOOD "vendor should not choke on this. What say you? Thanks Deac KAW/USA Director, Business Development 39 Simon Street, Suite 4 Nashua, NH 03060 phone: (603) 886-8711 ext.202 fax: (603) 881-8763 Cell : (603) 557-7568 Web sites: www.kaw.com www.emistream.com --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------