Thanks for your comments Dewey and Richard. Nearly all industry standards are built in sections. J-STD-001 and IPC-A-610 have separate criteria for soldering to terminals, through-hole and SMT. It isn't applicable to apply the criteria for one kind of connection to another connection. This even carries foreward to differences in criteria for "ribbon" gull-wing leads and "flattened/coined" gull-wing leads. The sections within IPC-7711A/7721A are clearly labeled in the Table of Contents and on each procedure. IPC-7711A/7721A is published in a three-ring binder so that users can remove procedures that are not applicable/permitted for their product. They can add company-unique procedures. Redundant content that was in both documents (all front-matter, conformal coating removal) was eliminated. The IPC Rework/Repair Subcommittee 7-34 will be meeting in Madison (Huntsville) AL June 22-23 to begin a major review. They will be looking for any possible additional content to help users with lead free rework/repair issues. Additionally, because nearly every repair is unique and can't be directly associated with any published acceptance criteria, the committee will be working to expand the "Assessment" sections for each Section 3 (7721) Repair/Modification procedure. Anyone is invited/encouraged to provide constructive input that will make this document better for industry. Of course, you are welcome to participate in the meeting as well. Jack Jack Crawford, IOM IPC Director Certification and Assembly Technology [log in to unmask] 847-597-2893 FAX 847-615-5693 3000 Lakeside Drive, Suite 309 S Bannockburn, IL, 60015 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: Monday, April 10, 2006 7:06 AM To: [log in to unmask] Subject: Re: [TN] relationship between J-STD-001 and IPC 7711/7721: need your help. Agreed. Many customers look favorably on rework methods called out in 7711, but do not want to allow "generalized" repairs specified in 7721, and have the difficulty of not being able to allow the one without the other because the document is combined. Many companies have their own repair procedures that specify a particular epoxy, wire or other materials/methods, such as low-outgassing materials for space use. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (AZ75) Sent: Thursday, April 06, 2006 12:28 PM To: [log in to unmask] Subject: Re: [TN] relationship between J-STD-001 and IPC 7711/7721: need your help. This is one area where I disagree with the IPC approach. IPC 7711 and IPC 7721 should have never been put together. There was an expectation that things that were done in 7711 would meet acceptance criteria established in J-STD-001 and 610 for class 3. 7721 reflects methodologies that exist, but are not necessarily compliant with anything, unless you say so in your own documentation. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of prasad godavarti Sent: Thursday, April 06, 2006 7:38 AM To: [log in to unmask] Subject: [TN] relationship between J-STD-001 and IPC 7711/7721: need your help. In a nutshell here is where i need some help: we call out and enforce J-STD-001, Class 3 on our assembly drawings. Very often we do repair/rework on these assemblies and we do not seem to have a clear link between IPC 7711 and IPC 7721 wherein the how-to's and what to control are listed and J-STD-001, Class3. The only words that address repair/rework in J-STD-001 have to do with the acceptance criteria for such operations. Ques: 1. I am reading this correctly? 2. How do i ensure that the repair and rework procedures and the skill sets are adequate? do I need to explicitly state in on the drawing the need for repair and rework per IPC 771 and IPC 7721? 3. If i do not state that then is the compliance to J-std-001 violated? Thanks Prasad Godavarti __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com --------------------------------------------------- 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 -----------------------------------------------------