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March 2000

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Subject:
Re: How to detect contamination on metal surface
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 7 Mar 2000 19:49:43 +0200
Content-Type:
text/plain
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text/plain (84 lines) 
Ingemar

see below

"Ingemar Hernefjord (EMW)" wrote:

> >> Over and out / Ingemar
> > Just had to do this, it's Fryday and soon time for both this and that. Yeaahooo!
>
> Efharisto polee, Ingemar, kai yia sou
>
> Brian
>
> Brianó, apo ellinika se latinika, auto itan dyskolo, ta parato.

You never cease to amaze me.

>
> Translation, malaysian and means: I (Brian) have a free passage from one ear to the other.
> new giggle.

Rather rough translation, if I may say so.

>
>
> Now, Brian,let's leave what we don't understand. However, you must be very skilled and experienced like few, be one of the real gurus on this net (now buttered up?),

Flattery will get you everywhere, man.

> I will ask you if you are good on 'hybrids' and MCM design and manufacturing too?

Moyennement bon

> You have questions from Cecilia A. about cleaners and substrates. My opinion is that all kind of wet stuff can leave traces,

Agreed, including all other types of cleaning. As we know it, cleaning is a series of successive (hopefully) dilutions, therefore there must be residues at the end.

> that can cause fine wire bonding troubles. The thickfilm and the ceramic itself is microscopically seen like sponges, and can hide anything.

But not half as much as spongy epoxy or other resins. A lot depends on the ceramic composition and the alumina:silicates ratio.

> This question: have you ever seen DC and RF connectors for direct mounting on MCMs, preferably for other-than-dirty-flux-tinlead-soldering.

No!

>
>
> Greetings
> Ingemar

And to you

Brian

>
>
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