I agree w/ Ramon. Aside from the vibration / reliability issues, I would be very concerned with the manufacturability of such a bus bar. Attaching this to the PCB will be very difficult, as the busbar will act as a very nice heat sink. My recommendation would be utilize locating pins in the bus bar w/ mating holes in the PCB. Then utilize hardware through the PCB to attach the bus-bar. You can put helicoils in the bus bar, or machine thru and utilize nuts. Also from a machining and cost standpoint, perhaps anodized Al vs Cu? Anodize the external surfaces. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon Sent: Monday, October 10, 2005 2:08 PM To: [log in to unmask] Subject: Re: [TN] Buss Bar Attachment Method Hi John: Have you consider besides soldering it, to also hardware it to a specific torque? That much current may cause vibration and cracking of the joints. Regards, Ramon -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of John Bauer Sent: Monday, October 10, 2005 1:24 PM To: [log in to unmask] Subject: [TN] Buss Bar Attachment Method Greetings, We have an application where we will be attaching a buss bar that is 6 inches in length X .50 inch wide X .125 inch thick to the surface of our PCBA. The buss bar material is currently spec'd as full hard copper and is tin-lead plated. The .50 inch width side of the buss bar will be the surface soldered to the PCBA. My questions to you are 1) What process would be used to solder this bar to surface of the PCBA? 2) What plating options would be recommended other than tin-lead for this buss bar? The end use application for this will require that it handle 1000A of current in a worst case scenario. Thanks in advance, John Bauer --------------------------------------------------- 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 -----------------------------------------------------