[SI-LIST] Re: Electrically conductive Epoxy

Fei - In my experience with conductive epoxy (DuPont's CB100 fill) in
its use as a via fill, air entrapment (bubbles) during dispensing and
curing in the mixture is a common occurrence.  This was not shown to be
a problem in my application and I haven't analyzed its effects at high
frequencies, but depending on the size/shape of your connection this
could(?) have an effect.  ..mike

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of feicaguo
Sent: Wednesday, February 23, 2005 7:19 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Electrically conductive Epoxy


A electrically conductive epoxy is used as grounding connections=20
between packages and module housing.  I tested several samples, the=20
RF transitions showed a significant variation.  I am wondering if the=20
spread is caused by the epoxy.  Anyone has similar experiance?

Thanks

Fei



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 =20



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