But if the tracks and the component terminations are solder, you won't
get a very reliable connection with silver loaded epoxy ....

Peter
--
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Peter Swanson        [log in to unmask]
INTERTRONICS            http://www.intertronics.co.uk

   INTERTRONICS is dedicated to providing quality
  material, consumable and equipment solutions to the
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-----Original Message-----
From: Joe V. Ottesen [mailto:[log in to unmask]]
Sent: 11 January 2001 7:09
To: [log in to unmask]
Subject: Re: [TN] RF Surface mount...


"Stephen R. Gregory" wrote:

> Hey all,
>
> We've got a job in here that's going to be a few RF assembies. It uses
> surface mount in the design, but the board doesn't have any soldermask
at all
> on the surface.
>
> The last time I dealt with something such as this, and tried to print
solder
> paste, place components, and reflow, all I wound-up with is a bunch of
> tomb-stones, and insufficient solder all over the board because the
solder
> wants to flow out all along the surface layer traces, and goes
where-ever it
> wants to go...because there's no soldermask to contain it.
>
> I'll try to post a picture of what I'm getting ready to deal with on
my
> free-drive tomorrow...
>
> This is not high volume at all, but from past experience it's my take
that we
> should just hand solder stuff like this...because we'll wind-up
touching-up
> everything anyway...have any of you ever dealt with stuff like this
before?
>
> -Steve Gregory-
>
>
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Hey,

    Have you considered using conductive glue.....that stays were you
dispense it.


--

Joe V. Ottosen
Website      http://www.bbelectronics.dk

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