H-P is, of course, a no name company as an 8 billion dollar IPO after being
dumped by parent, but everyone knows that. I agree this facility has some
great experience. After all, in the business they're in, they'd better.
Earl Moon
----- Original Message -----
From: Carey Pico <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, September 17, 1999 12:15 AM
Subject: Re: [TN] HISTACK, IBM-type, japs
> Another excellent shop is Hewlett-Packard (name changed recently???) in
> Santa Rosa. They know plating better than any one I know (including IBM).
>
> -----Original Message-----
> From: joyce <[log in to unmask]>
> To: [log in to unmask] <[log in to unmask]>
> Date: Thursday, September 16, 1999 4:03 PM
> Subject: Re: [TN] HISTACK, IBM-type, japs
>
>
> >wow! blame the test vehicle for the failure on ESS (based on the
> >daisychain...I assume you are doing qualification and failed in
> >T/H/B)...Blame the Doctors too on the design ...gee, really should just
let
> >you "swim or sink" on your own...but, I do like Big blue and
IBM-guys...do
> >not want them got beatten for no reason at all!
> >based on the limited information you provided, here is what I would do if
I
> >were you:
> >(1) pay IBM ($)for Failure analysis...If it is SIR type of test vehicle
> >(with daisychain), I think you may need LSI tester to pin point where is
> the
> >leak or short. I believe they have a component lab and FA lab for doing
> >outside work (at least used to be).
> >(2) Pay IBM well ($$) for root cause analysis (you may have to open your
> >material/process in order to get some real benefit of root cause.
"Window
> >dressing" will lead you more costly FA).
> >(3) Pay IBM more (big time $$$$) for training some of your personnel to
do
> >proper FA. (be willing to spend sleepless nights to make sure you
> >understand the steps and why!)...send someone with background in FA and
> >design/process...Believe me, it is a good investment...You may have to
sign
> >some non-disclosure agreement.. watch what you sign...(you may sign off
> your
> >day dream and nightmare too)..
> >(4) look like so far the only 2 people replied your e-mail are Dr.s! stop
> >bashing us... you may need us someday (like as a drinking buddy).
> > jk
> >At 09:12 AM 9/16/99 +0200, you wrote:
> >>Guten Wienerschnitzel, netters,
> >>challenge for an IBM-guy if he reads (no, of course he doesn't, big Blue
> >too big) , maybe my mate and competitor Bev can rise his eyebrow and move
> >his finger to the keyboard. Topic: multilayer 3D "boards" with IBMs
liftoff
> >and PI dielectric. Reactive Ion etch (O2/He RIE) through mask for
removing
> >PI, followed by WSiN sputter for biting and low current electroplating
for
> >first step making the vias. Vias are finally O2 plasma, SF6 RIE'd. Now,
> most
> >seems maybe familiar to you, but, the problem is that the conductors are
> >only 4um wide and the vias 1um in diameter. Test "board" consists of
single
> >to two layers with very short conductors, daysichained, let's say a
hundred
> >such strips. See it in front of you: gold, under is the via, via goes
> >horizontally some um, goes up to next gold, .. up, down, up down, like
> >chaining an ordinarey PWB, but one decade smaller. And, PI is the
> >dielectric, approx 2um thick. Now, palomas, the Q:
> >>when these "boards" are temcycled we get interrupts somewhere in the
> >daisychain, seen as RF signal anomalies. How on earth do we analyse?
> >Ordinary SEM of surface tells nothing of what's under the conductor.
> >Finefocus Xray has unsufficient resolution for finding microcracks.
> >Sonoscan, no. Cross-sectioning, no, weeks of job, little chanse of
finding
> >rupture. Reactive etching will heat and possibly take both Gold and PI.
Wet
> >etching, e.g. KaC? Takes Au, but what do you do with the W under Au?
Agree,
> >more like semiconductor techs.
> >>
> >>Oftenly when we have to do with the japs, we describe with hands, paper,
> >mail, photos and words, and they reply 'yes', 'yes', which is oftenly of
> >little help. So, Bev (I'm sure you have a recipe in your pocket) and
like,
> >what do I do with the drunken saylor?
> >>Aussilek, give up, you can't be specialist on everything, you must have
> >some limitation, please, tell that you are a human and not a Cray. (on
that
> >isle you may say crayfish, I don' t know).
> >>
> >>Cu?
> >>
> >>Ingemar Hernefjord
> >>Ericsson Microwave Systems
> >>
> >>PS. With HISTACK, I mean that our test samples remind of this EU-thing,
> but
> >does not belong to EU at all.
> >>
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