Hi Linda, you may want to check out IPC-6012, 3.5.1 Conductor Width and Thickness. It allows minimum conductor width of 80% of the conductor pattern supplied in the procurement document. Then IPC-A-600 also references Conductor Width in Section 2.10.1.1 and it allows another 20% reduction for Class 2, 3 and 30% for Class 3 from the minimum value for edge roughness, nicks and so one for a given length along a conductor. Hope this helps in getting you started in getting information on conductor width requirements. Leo Lambert EPTAC Corp Longfellow Square, Bldg II 8025 So. Willow St. Manchester, NH, 03103 800-643-7822 ext 15 [log in to unmask] www.eptac.com -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Linda Langley Sent: Monday, February 16, 2004 10:49 AM To: [log in to unmask] Subject: [TN] Carbon Traces I am looking for specs on trace width requirements and criteria for inspecting for defects. Also if anyone has any guidelines on rework for this type of a circuit I would appreciate it. Linda Langley Training Specialist Jabil Circuit Inc. Auburn Hills, Michigan (248) 292-6176 CONFIDENTIALITY NOTICE: The information contained in this electronic communication, including any attachments, is confidential information, is intended only for the use of the recipients named above, and may be legally privileged. If the reader of this message is not an intended recipient, you are hereby notified that any review, use, dissemination, distribution or copying of this communication, or any of its contents, is strictly prohibited. If you have received this communication in error, please notify us immediately of the error by return e-mail and please permanently remove the original message and any copy of it from your system. Nothing herein is intended to constitute an electronic signature or consent. Thank you --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------