Mr Trikeman,
we have in fact tested the idea a number of times and we mean that  there
are essential benefits:

- you need no solder mask
- you can create extremly small dots, < 50um
- No Lead of course
- you need no cleaning processes
- can be applied on 'any' surface
- cure at << solder temp
- thermal and mechanical stress resistivity better

I don't think I remembert all plus'es

On the negative side:

- Customers do not accept 'glueing' , as some use to say
- much higher repair cost
- thermal conductivity not as good as pure metal (solder alloys)
- for super large/super dense boards, the yield was not acceptable
- I remember there  were some more negatives, but I don't remember

So, the positive and negative aspects are about fifty/fifty, and that was
enough for the pennymen to say 'no' for the 'glue' to step in.

Inge

PS. One more negative came to my mind: can be applied to 'any' surface,
that means boards and substrates. However, not likewise for many
components, which had contaminations in the micro size. Dirt that resulted
in poor contact with glue, was no problem at all with wave soldering.

Hope this does not help

Inge




On 12 March 2012 16:39, Steve Gregory <[log in to unmask]> wrote:

> Hey all,
>
>
>
> Wish I hadn't lost that hour of sleep this weekend, I'll try to find it
> tonight. :o)
>
>
>
> Anyways, have any of you thought of trying to replace solder with a
> conductive adhesive for PCB assembly? There's a few out there (Henkel,
> Cookson, Ellsworth, etc.) that are touting them as solder replacements.
>
>
>
> When I read the technical datasheets, I'm thinking to myself, why isn't
> this
> stuff more widely used? There must be a reason.
>
>
>
> I do know it's pretty expensive almost all of them are silver filled, and I
> have read that the mechanical strength and thermal conductivity is not as
> good as solder, but what other reasons are out there not to use it?
>
>
>
> Steve
>
>
>
> ______________________________________________________________________
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