Hi Matthew, Be very careful using edge card connectors or similar (they need to be gold-plated contacts), especially if you are testing to Class III conditions (85C/85% RH). Leakage across the connector can be a problem. You should definitely make the appropriate electrical measurements before changing connection schemes. By the way, you should remove the flux after soldering the wires onto the coupon so that it does not contaminate your samples. We use WW rosin and clean using a plastic scrubber (it looks similar to steel wool) and IPA. This should be done immediately after soldering. Be careful not to let the IPA run onto the coupon (orient the coupon vertically with the connedtion side down). Also, it's a good idea to use Teflon coated wired. If you have any questions, drop me a line. Regards, Sande Petty-Weeks, Motorola, [log in to unmask] _______________________________________________________________________________ To: [log in to unmask]@INTERNET From: [log in to unmask]@INTERNET on Wed, Mar 6, 1996 2:41 PM Subject: Connecting wires to PCB's Resent-Date: Wed, 6 Mar 1996 14:29:51 -0800 Old-Return-Path: <[log in to unmask]> Resent-Message-Id: <"__Oyv2.0.9e8.ZZUFn"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/2997 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask] IPC, I am an intern for INTeL Corporation and I am currently working on a project that involves the measurements of the Surface Insulation Resistance(SIR) of PCB's. The project has been broadened recently and I have come to the conclusion that the current methods are taking too long and are too sloppy. So here is the deal. The SIROMETER has 22 gauge wires which are connected to the pcb's. The coupons we are currently using are B24(I don't know where INTeL got them, but my supervisor suggested to contact IPC.ORG on the web to look for help). Well, soldering the wires to the edge connectors of the PCB's just isn't cutting it. It is a painstakingly long process and resoldering is very messy and will impede with the integrity of our results. The question - Do you know of any type of connectors or adapters or small jumper cable type things that would make this connection simpler? I am probably going to drop by Homebase tomorrow to see if they got anything that would work. Just wanted your opinion. Thanks for your time! Matthew Holden Intern at INTeL Corporation (602) 554-3247