Ingemar,

You give me more credit than I deserve - I hardly understood the question
much less be able to come up with an answer! :>0

Looking at the response from Roger Massey, I couldn't agree more!

Seriously though, it would logically appear as though there must be some
form of absorption into the plate. Suggested port-of-call for you would be
our friends at IVF in Goteborg - surely they could help?

From now on I shall be referred to NOT as guru but GooRoo :>)

Regards,
Graham Naisbitt

[log in to unmask]

WEB: http://www.concoat.co.uk

CONCOAT Ltd
Alasan House, Albany Park
CAMBERLEY GU15 2PL UK

Tel: +44 (0) 1276 691100  Fax: +44 (0) 1276 691227
----- Original Message -----
From: <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, August 12, 1999 1:14 PM
Subject: Re: [TN] Where are the others?


> Sure, Graham,
> maybe some misunderstanding (joking must be correctly formulated), I
> don't mean to use french language, just tried to make a baite so someone
> from a french company came in. I'm still wondering why the french
> companies are so reserved in this forum.
> Now, Graham, forget my question, I leave the issue completely, instead I
> have something for you and possibly someone else: how do you 1)verify
> 2)get rid of built-in gas or gas-creating micromaterial in a metal plate
> or a Au/Ni/Cu-Mo plate? We mount large semiconductor chips on
> heat-spreader by means of a thermoplastic film. The supplier of this
> film is one of the most familiar, they have specified Tg, outgassing,
> and all other chemical factors, and it seems as this film transer will
> not cause gas to grow under the chip during curing. But we get bubbles
> between the film and the heat spreader. The american thermoplastic film
> supplier has inspected our line and concept and he can't understand the
> bubble's origin. Can't be the transfer, he said.
> If extremly advanced or unusual equipments are needed for such
> evaluation, can you help us Graham? I can send a photo to you so you get
> more than words. Maybe IMAPS is a more correct adress for such
> questions, but I suspect many of you are in there too.
>
> Best wishes
>
> /Ingemar Hernefjord
> Ericsson Microwave Systems
>
>
>
> ---------------------------separator---------------------------------
> > Ingemar,
> >
> > You know one of the major drawbacks of the whole "Internet" thing, is
> that
> > you MUST speak / read / write English.
> >
> > Curious thing is, most of the planet don't!
> >
> > In my experience, France, Italy, Spain are hors de combat! (Good old
> English
> > expression!)
> >
> > Of course there are those cynics who would point out that the UK and
> the USA
> > are 2 nations divided by a common language.
> >
> > And if you think this is bad, take a look at my reply to Vincent
> BADA....
> >
> > Regards,
> > Graham Naisbitt
> >
> > [log in to unmask]
> >
> > WEB: http://www.concoat.co.uk
> >
> > CONCOAT Ltd
> > Alasan House, Albany Park
> > CAMBERLEY GU15 2PL UK
> >
> > Tel: +44 (0) 1276 691100  Fax: +44 (0) 1276 691227
>
> >
>
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