If the part is Class 2, the via should have trace intersect reliability as well as connection to 270 degrees of the feed-through. Damage to the pad that does not violate these parameters should be a defendable position. 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: Mary Jane Chism [mailto:[log in to unmask]] Sent: Thursday, June 30, 2005 10:25 AM To: [log in to unmask] Subject: [TN] Via holes damaged Group, I have a question on via holes damaged by test probes. We have a situation where some of the annular ring of the vias used for test points are being damaged. I have looked in the IPC-A-610 Rev. D and also IPC-A-600 Rev. G, but am not finding what I need or am not looking in the right place. If anyone knows of the requirements of what is acceptable or a defect for this type of condition, please let me know. Thanks. Mary Jane Mary Jane Chism Technical Trainer/ Learning Center Kimball Electronics Group email: [log in to unmask] <mailto:[log in to unmask]> Phone: 812-634-4462 Fax: 812-634-4501 --------------------------------------------------- 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 -----------------------------------------------------