It might also be from too hot of a soldering iron, water soluble flux migrating and causing the gapping/oxidation, or even an incompatible wash additive. I know of a few cleaners who destroy some mag wires so maybe this is similar. Kat ----- Original Message ----- From: "Hogg, Blair K." <[log in to unmask]> Date: Monday, August 27, 2007 4:22 pm Subject: Re: [TN] 26 AWG HML Wire To: [log in to unmask] > I'm not sure about the process that applies the insulation, but if the > wire is oxidized, perhaps the coating won't adhere? > > Blair > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory > Sent: Friday, August 24, 2007 2:30 PM > To: [log in to unmask] > Subject: Re: [TN] 26 AWG HML Wire > > Hi Donald! > > I got your pictures posted. I'll paste the appropiate picture > links to > each of your descriptions below... > > Steve Gregory > > ________________________________ > > From: Donald Kyle [mailto:[log in to unmask]] > Sent: Friday, August 24, 2007 11:08 AM > To: [log in to unmask] > Cc: Steve Gregory > Subject: 26 AWG HML Wire > > > Steve, would you mind posting these pictures for me. > Thanks in advance > Donald Kyle > > Good morning > > I have some inductors that were made recently that we are having an > issue with. > > They are wound multifilar with 26 AWG HML wire. The problem is > with the > polyimide insulation; it's peeling off the wire. Not good for the > wiresto short. > > I'm suspecting that the insulation was not cured or maybe it's not > polyimide insulation. > > The insulation is peeling where the wire was bent tight and even where > it wasn't. > > These inductors have had a varnish applied and cured but no other > processes after that except assembly onto boards. > > Picture 1 is a lead that was soldered to the board; you can see the > insulation has peeled back. > > http://stevezeva.homestead.com/files/Picture_1.jpg > > In picture 2, the wires are held together with epoxy and the > insulationhas peeled back where the wires make a bend. > > http://stevezeva.homestead.com/files/Picture_2.jpg > > In picture 3, is another wire with the insulation peeling back. > > http://stevezeva.homestead.com/files/Picture_3.jpg > > In picture 4, you are looking straight down the barrel. Notice > how the > insulation has come away all around the wire. > > http://stevezeva.homestead.com/files/Picture_4.jpg > > In picture 5, you are looking at picture 4 but at an angle. > > http://stevezeva.homestead.com/files/Picture_5.jpg > > In picture 6, you are looking at a good piece of wire from my > stock. > > http://stevezeva.homestead.com/files/Picture_6.jpg > > > Any ideas? > > > > > > Donald Kyle C.I.D.+ > > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > 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 > ----------------------------------------------------- > > ******************************************************************* > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to whom they > are addressed. If you have received this email in error please notify > the system manager. > > This footnote also confirms that this email message has been swept > for the presence of computer viruses. > > www.Hubbell.com - Hubbell Incorporated > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > 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/archivesPlease 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 15.0 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 -----------------------------------------------------