Ioan: Another option that is available is the combination of routing and V scoring the boards in a panel by the board fabricator. That way the tabs will be a lot easier to break and the stress will be minimized by exerting the force on the middle layers. Regards, Ramon -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Gerald Gagnon Sent: Saturday, January 21, 2006 1:02 PM To: [log in to unmask] Subject: Re: [TN] Panelization of backplanes Ioan, Probably late with the reply. Get the boards routed to finished circuit size and deal with only the assembly issues thereafter. Other "break away" type singulation methods do not work well for these boards. You will be placing stresses on components. You will find that you will also be doing a lot of edge repairs unless you want to do the "machining" after assembly with specialized equipment you can buy for this task. Post assembly routing is an option. I have heard of water-jet cutting as well. Beware of stresses you will be placing on your components and connectors as well as all the debris you will generate. All these things puts the risk on you after you have added all the value through assembly. Good luck Gerry From: "Tempea, Ioan" <[log in to unmask]> Reply-To: TechNet E-Mail Forum <[log in to unmask]>, "Tempea, Ioan" <[log in to unmask]> To: [log in to unmask] Subject: [TN] Panelization of backplanes Date: Thu, 19 Jan 2006 15:37:58 -0500 Hi Technos, I have a few 2.5"x18" PCBs here that are 0.236" thick. Among the pressfit connectors there also are some SMT passives, so I need to pass them on the assembly line. Can I panelize boards of this thickness? Is V-scoring an option? 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 ----------------------------------------------------- _________________________________________________________________ Is your PC infected? Get a FREE online computer virus scan from McAfee(r) Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 --------------------------------------------------- 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 -----------------------------------------------------