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Subject: Re: Jumping chips

From: "michaelj22@..." <michaelj22@...>
Date: 2009-04-09

There is also a product by Creative Materials Inc called 122-38, a conductive epoxy which may work for this. Not sure if it will reflow but may be worth a check: Data sheet:http://server.creativematerials.com/search_results.html?cx=005626523669659259832%3Aggdtpniksno&cof=FORID%3A11&q=123-38#262
MJ 4088354979

--- In Homebrew_PCBs@yahoogroups.com, "davada" <davidlbarber@...> wrote:
>
> PCB industry glues the SMT components to the board before reflow. It's a
> pain in the butt if the components have to be replaced, but this how the problem is overcome. Finding the right cement is the key.
>
> David.
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "Jim Lewis" <jim.lewis@> wrote:
> >
> > I have a problem with SMT chips jumping off the board during reflow. I preheat for 2.5 minutes 1/4" above the hot plate and then reflow 1.5 minutes directly on the hot plate at 375F with a cover. Paste is from Stencils Unlimited. Any solutions?
> >
>