> I'm not sure if I reach TechNet readers orderly, so this mail is a repetition
of an earlier mail.

> I dare to ask about "glue" in this sober club. Heard the following from a
> known US manufacturer of Silver Filled Epoxy:  
>  
> If certain silver epoxies are used on an aluminium surface, oxidizing of
silver flakes and attach of acidous hardener on aluminium can cause electrical
instability.

> So, if you attach chips by means of a silver epoxy, the interface
> between the aluminium and the glue may be:  a)non-cured and
> b)silver-oxidized. Best countermeasure is to use a gold-filled epoxy
> or an epoxy which cures with something else than acid.
>  
> It's said that severe grounding problems occured with "wrong" silver
> epoxy. Anyone with experience of this peculiar behavior?  

Maybe the glue maker don't want to be advertized
> this way, so no names or materials are typed.  
>            
>                          / Ingemar
>  
>                 Ericsson Microwave Systems / Sweden