Additional considerations are in 610D Clause 10.4.4 Flux Residues - No-Clean Process - Appearance Acceptable - Class 1,2,3 * Flux residue on, around, or bridging between noncommon lands, component leads and conductors. * Flux residue does not inhibit visual inspection. * Flux residue does not inhibit access to test points of the assembly. Acceptable - Class 1 Process Indicator - Class 2 Defect - Class 3 * Finger prints in no-clean residue. Defect - Class 2,3 * Flux residue inhibits visual inspection. * Flux residue inhibits access to test points. Note 1. There is no defect for discoloration of OSP coated assemblies that come in contact with flux residues from no-clean process. Note 2. Residue appearance may vary depending upon flux characteristics and solder processes. Defect - Class 1,2,3 * Wet, tacky, or excessive flux residues that may spread onto other surfaces. * No-clean flux residue on any electrical mating surface that inhibits electrical connection. 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 Gerry Savard Sent: Monday, June 27, 2005 8:30 PM To: [log in to unmask] Subject: Re: [TN] No-clean residue requirements IPC-A-610D, section 10.4.1, states as acceptable, Class 1,2,3 "No discernible residue from cleanable fluxes is allowed" and "Flux residues from no-clean processes may be allowed." The 'may be allowed' part I believe covers the bases for those products that have to be super clean depending on its end-usage. In general, no-clean will leave some residue which is acceptable since it's activity is very low. Gerry Savard -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jordan, Dave Sent: Monday, June 27, 2005 8:46 PM To: [log in to unmask] Subject: [TN] No-clean residue requirements I've got a customer claiming that the slight residue left on a board by no-clean flux is a fault under either IPC-A-610 or J-STD-001. Perhaps I'm missing it, but there doesn't seem to be any clear statement about no-clean residue vs water wash in the standards. Any help out there? Thanks in advance. Dave Production Operations Nova Engineering --------------------------------------------------- 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 -----------------------------------------------------