Guy, My copy of IPC-7721 dated February, 1998 only goes up to procedure 5.3. What rev do you have that goes further? thanks joe -----Original Message----- From: Guy Ramsey [mailto:[log in to unmask]] Sent: Friday, June 18, 2004 8:20 AM To: [log in to unmask] Subject: Re: [TN] Dead Bugs The method is described in IPC-7721 Procedure 6.3, figure 10. Skill level required is advanced and level of conformance is N/A. There are a lot of unknowns: ceramic or plastic component, method of bonding the package and the wires. Properly done this should be a very reliable modification. > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Joseph E > Sent: Friday, June 18, 2004 10:27 AM > To: [log in to unmask] > Subject: [TN] Dead Bugs > > We've talked before about implementing design changes with > "dead bug" components, where you turn the part upside down, > bond it to the board surface, and solder wires to the pins. > > Of course, this takes more labor, but sometimes it's useful > to implement a change for a short time while artwork is being updated. > > Now we have a customer talking about disallowing this > practice for production. Anyone have a good reason why dead > bugs should be outlawed? Are there any specs that prohibit this? > > Joe Kane > BAE SYSTEMS Controls > Johnson City, NY --------------------------------------------------- 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 -----------------------------------------------------