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Subject: Re: [Homebrew_PCBs] Re: how can i prevent corosion?

From: mpdickens <md30022@...>
Date: 2003-12-02

--- Steve <alienrelics@...> wrote:

> I may just pot the high impedance part of the
circuit > if I can find an epoxy encapsulant that has
very little
> conductance.

Polyester resin (Epoxy is the trade name for polyester
resin) has an extremely low conductance. In fact, the
conductance of expoxy is close to that of glass.

FWIW, here is a something that everybody may want to
take a look at:

http://www.alchemetal.com/Characteristics.htm


I'm ordering the a sample kit for a project that I'm
working on for a customer. The kit consists of:

∗ 1 pound of Alchemetal AC-78
∗ 1 pound of Alchemetal special solvent
∗ 1 ounce of Kester flux 819

The sample kit will cover approximately 30 square feet
of substrate at a 2 mil wet thickness. If anyone wants
some, email me off list and I'll sell you some at my
cost (Naturally, in new, appropriate packaging). There
is no way I can use it all...

Best regards

Marvin Dickens
Alpharetta, Georgia USA


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