Ingemar I'm not oversurprised by your assertions, but I'm a wee bit puzzled by how much chloride you found there. I do not think there is any chlorine, in any form, in Vigon solution - unless you mix it with sea water :-) This is the first place I'd start asking questions, especially as many chlorides are poorly soluble in your isopropanol. Best regards, Brian Ingemar Hernefjord (EMW) wrote: > Hi, thought I might interrupt all social q with a tech one? Had a > chat with Brian long ago about the highly alcalic A200. Today, actual > story: We have made a mistake, machine washed circular receptacles > after we had mounted flexes on the backside (of the receptacles). > This cleaning agent penetrated to the inside of con body, because > it's not potted. Now, that volume consists of numerous gold plated > pins, with or without filter caps. Obviously, the A200 caused serious > damage to the inside, because we got corrosion, leakage current, and > finally ignitions. Connector body is P nickel plated aluminium, and > even the body's inside was attacked by some type of corrosion. The > corrosion products are blue-green (between pins) or colourless (body > inside). EDAX gives high Cl+Cu for the blue-green stuff and high > Cl+Ni for the body ditto. The 'dielectric' material, which separates > the pins and also tries to make connector tight, is a fluorized > silicon + unknown assistive polymer. > > Question is how the corrosion can start so early in the product's > life and also how it can go so far, remembering that the pins are > goldplated, and that the aluminium body has a very thick and dense > nickel plate. > > We have changed to Isopropanol, and have no such problems any more, > but we were really scared by the Vigon disaster. Anyone with similar > experience? > > Ingemar Hernefjord Ericsson Microwave Systems > > --------------------------------------------------- Technet Mail List > provided as a free 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/html/forum.htm for > additional information, or contact Keach Sasamori at [log in to unmask] > or 847-509-9700 ext.5315 > ----------------------------------------------------- > > --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------