>From the EMPF HelpLine, prepared by John Guy: "We at the EMPF have done some work with the manufacturing of surface mount assemblies using conductive epoxies. I would be more than happy to talk to you about our work and the results we saw. You can contact me at: [log in to unmask] Phone: 317 226-5630 FAX: 317 226-5615 In short, we saw that the conductive adhesives we looked at did very well with the chip caps, and we were using components with a tin/lead surface finish. I'm sure you would be better off with the gold finish, unless that finish is too smooth. The adhesives will hold better to a rough, clean surface. If you can make yourself think in terms of bonding metals with adhesives, instead of soldering them, you will be much better off in the long run. ---------- From: TechNet-request To: technet; msampson Subject: Conductive Epoxy w/ Solder Term. Chip Caps Date: 21 Feb 96 10:16AM Return-Path: <[log in to unmask]> Resent-Date: Wed, 21 Feb 1996 09:42:48 -0800 Old-Return-Path: <[log in to unmask]> From: [log in to unmask] Date: Wed, 21 Feb 96 10:16:24 EST Message-Id: <[log in to unmask]> To: [log in to unmask], [log in to unmask] Subject: Conductive Epoxy w/ Solder Term. Chip Caps Resent-Message-ID: <"p5iA5.0.grD.3gpAn"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/2804 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask] ---------------------------------------------------------------------------- -- We are looking for information from anyone with experience using silver loaded conductive epoxy to mount solder terminated chip capacitors. Does it work? Any pitfalls? Lessons learned? We are having difficulty obtaining chip caps of the quality level we want with gold terminations. These chips caps will be mounted in a hybrid which is intended for space flight use. The hybrid manufacturer intends to silver epoxy mount these parts and we are not sure what our best option is. Any information you may have is greatly appreciated. Sincerely, Jay Brusse Unisys Corporation at NASA/Goddard Space Flight Center [log in to unmask]