Is anyone aware of any reference book or review article available that describes examples of PCB corrosion failures such as this green rust, along with failure analysis to explain the chemical sources of the failures? My reference books do not seem to cover this in any detail. Edwin Bradley Motorola Ft. Lauderdale FL ________________________________________________________ To: [log in to unmask]@INTERNET From: [log in to unmask]@INTERNET on Mon, May 20, 1996 12:48 PM Subject: Re: FAB: Green rust Resent-Date: Mon, 20 May 1996 11:05:43 -0700 Resent-Sender: [log in to unmask] Old-Return-Path: <[log in to unmask]> Resent-Message-Id: <"gXGJZ.0.ltA.LA9en"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/4221 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask] Doug, The greenish material that you are seeing is most likely copper chloride. It means that you have a chloride-bearing material coming into contact with the pins, corroding them. Doug Pauls CSL [log in to unmask]