.int [log in to unmask] For a good paper see http://www.amp.com/product/articles/dd68_1.html on the web, Per the Tin Commandments: "Mating tin-plated contacts to gold-plated contacts is not recommended." I have this situation on my home computer and sure enuf, after a yaer I had to re-seat the sims! Larry Sternig [log in to unmask] *** Original Author: ipc.ipc.org!ipc.org! 01/24/96 071745 Resent-Date: Wed, 24 Jan 1996 05:04:36 -0800 Old-Return-Path: <[log in to unmask]> From: "Terry Davey" <[log in to unmask]> X-Mailer: Z-Mail (3.0.0 15dec93) To: [log in to unmask] Subject: Mating Au-Ni with Sn-Pb connectors Cc: turnerj@prut Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 Resent-Message-ID: <"MF_-J.0.CdE.UtY1n"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/2324 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask] Does anyone out there have experience/knowledge of mating gold-plate edge contacts (on SIMMS - so dry contacts) with tinned connectors. Is it a no-no from a long-term reliability point of view? We have a first source with tinned edge contacts (matching the connector) and are lokking at a gold-plate second source. Terry Davey [log in to unmask]