hi! How are you ? ----- Original Message ----- From: "John Burke" <[log in to unmask]> To: <[log in to unmask]> Sent: Tuesday, May 09, 2006 7:44 AM Subject: (瑞星æ示-æ¤é‚®ä»¶å¯èƒ½æ˜¯åžƒåœ¾é‚®ä»¶)Re: [TN] IPC Standard / PWB Router edge clearance > Yes it will. > > The interesting thing that I note is that no-one has commented on this from > a CAF growth standpoint. > > For 48 volt internal planes I have been advised that 3 mils drill to copper > is a good bet. If you only had 10 mils at the rout edge to copper on a slide > in card such as an internet switch blade, you would effectively have 10 mils > copper (internal) to ground (on the card guide external). > > Telecomms guys on the link what is your dimension for this? > > John > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor G. Hernandez > Sent: Monday, May 08, 2006 1:46 PM > To: [log in to unmask] > Subject: Re: [TN] IPC Standard / PWB Router edge clearance > > Now the ball is rolling on this topic. This is what I wanted to hear > on the different guidelines out there besides IPC STD. I will continue > too solicit thoughts on this topic. I feel that it is critical and > eventually cause failures on card . > > Victor, > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey > (AZ75) > Sent: Monday, May 08, 2006 3:14 PM > To: [log in to unmask] > Subject: Re: [TN] IPC Standard > > Yes and the conservative Aerospace approach added another .015 for all > uses and routing-out( de-panelizing ) required a .015 profile tolerance > so you ended up with an .040 design keep-out area from edge of PCB to > any conductive edge. > Dewey > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Jeffrey Bush > Sent: Monday, May 08, 2006 12:39 PM > To: [log in to unmask] > Subject: Re: [TN] IPC Standard > > MSFC-STD-154 paragraph 5.1.1.3 - minimum edge clearance of conductors > shall be .010". Just for trivia. > > MIL-STD-275 did call a .050" minimum or the use of a table based on > voltage where inner and outer conductors have different criteria. > > Jeffrey Bush > Director, Quality Assurance and Technical Support VERMONT CIRCUITS > INCORPORATED > 76 Technology Drive - POB 1890 > Brattleboro, Vermont 05302 > Voice - 802.257.4571 ext 21 > Fax - 802.257.0011 > <http://www.vtcircuits.com/> > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. > Sent: Monday, May 08, 2006 9:51 AM > To: [log in to unmask] > Subject: Re: [TN] IPC Standard > > Somewhere in the fabrication rules within the IPC specs is a .050" > minimum requirement from all unfinished edges. > This is to prevent exposed copper smears during routing of the PCB. > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Jeffrey Bush > Sent: Monday, May 08, 2006 7:25 AM > To: [log in to unmask] > Subject: Re: [TN] IPC Standard > > Rule was a .010" sealed edge distance - I believe this comes from a > defunct MIL Spec - but I cannot recall the document #. Also - this is > after the processing tolerances of the Fab house - you must add these to > the .010" design rule. > > Jeffrey Bush > Director, Quality Assurance and Technical Support VERMONT CIRCUITS > INCORPORATED > 76 Technology Drive - POB 1890 > Brattleboro, Vermont 05302 > Voice - 802.257.4571 ext 21 > Fax - 802.257.0011 > <http://www.vtcircuits.com/> > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor G. Hernandez > Sent: Friday, May 05, 2006 2:46 PM > To: [log in to unmask] > Subject: [TN] IPC Standard > > Fellow TechNetters > Where can I locate a related guideline of how close a copper plane > and/or trace can come to the router edge of a PWB. > > Victor, > > --------------------------------------------------- > 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 > ----------------------------------------------------- > > --------------------------------------------------- > 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 > ----------------------------------------------------- > > --------------------------------------------------- > 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 > -----------------------------------------------------