We have ran both the full tunnel (50 - 100 ppm oxygen) and have now gone to the Contour system (10 ppm oxygen at joint formation area) by Electrovert. No difference that I know of, in the test probe contact arena. We are using a 1.5 % solids flux however, which sounds a little stronger then what you are using. I don't think that you would need the whole tunnel but, some simple testing should give some answers. ---------- From: TechNet-request To: TechNet Subject: ASSY: BOUNDARY VS. FULL TUNNEL WAVE SOLDER NITROGEN INERTING Date: Friday, August 16, 1996 11:19 DOES ANYONE HAVE EXPERIENCE IN COMPARING INERTING THE WAVE SOLDERING OPERATION ONLY AT THE WAVE AS OPPOSED TO FULL TUNNEL INERTING? CAN YOU GO TO VERY LOW SOLIDS FLUXES (0.5-1.0%) WITH BOUNDARY INERTING OR DO YOU NEED THE FULL TUNNEL? IF YOU CAN GET BY WITH BOUNDARY INERTING: 1. CAN YOU GAIN A BENEFIT BY BEING ABLE TO USE LESS EXPENSIVE, LOW FORCE PROBE, TEST FIXTURES? 2. CAN YOU DECREASE THE FALSE REJECTS IN TEST WHICH ARE DUE TO FLUX RESIDUES? VIC BELDAVS (414) 362-2797 [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************