Only time changes, and not always so positively as I sometimes shave looking
at a stranger in the mirror or the mirror on my dome. I remember many times
wondering these same thoughts.
One most outstanding memory dates to the transition time from 50 mil pitch
to 25 mil SMT. A very large, "high technology" board shop, among others,
said there would never be a way to print and etch patterns for such
requirements. This was in 1986, I believe. The same conversations occur
today, as they did then and ten years prior, about what next is impossible.
However, there are many more astute, real process engineers working in the
PCB fab arena these days. Only trouble is there so "busy" reacting to, or
developing new, processes for us to discover.
And on it goes,
Earl Moon
----- Original Message -----
From: Bill Davis <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, October 04, 1999 12:15 PM
Subject: Re: [TN] PCB Manufacturers
> Paul: Here's my two cents worth-
>
> It gets worse if you think that the PCB manufacturers aren't talking to
> their customer base. They definitely do not talk to the component
> manufacturers. Over the past 24 months, I have had the unusual
happenstance
> to visit virtually every IC assembly facility in Asia, as well as many in
> Europe. These include both captive houses, as well as foundry services.
>
> In only one case (IBM) did I find that any PCB manufacturer had ever
> inquired as to where the IC interconnect industry was headed, either
> strategically or short term. How can one industry understand what its
future
> requirements will be if they do not understand where their greatest
> challenges are coming from.
>
> The art of copper placement on FR4 is not new; great strides have been
made
> to create finer and finer line widths at greater and greater planar
> densities. However, these are mere drops in the bucket when you consider
the
> available of 50um wire bonding at 10um pitches. The IC industry can do
this
> today if it only had a FR4 substrate capable of accepting it.
>
> As a end user of the PCB industry, it seems the only time we get to talk
to
> our PCB suppliers is when there is trouble- either in product performance
> (quality, line yields, etc.), pricing or delivery.
>
> Best regards,
> Bill Davis, Ph.D.
> Sr. Scientist
> (408) 325-7868
> [log in to unmask]
>
>
>
> -----Original Message-----
> From: Paul Brown [mailto:[log in to unmask]]
> Sent: Wednesday, September 29, 1999 2:39 PM
> To: [log in to unmask]
> Subject: [TN] PCB Manufacturers
>
>
> Well
>
> So far we have managed to obtain about 5 replies from PCB manufacturers
out
> of how may thousands worldwide
>
> Can anyone suggest a way of getting them involved ?
>
> Surely its about time that the people that use PCB,s( PWB,s) started
talking
> to the people that make them!
>
> I used to be a specialty chemical supplier to the PCB industry in the UK
and
> realized a long time ago that users of pcbs don't talk to the
manufacturers,
> they send them a design and that's it
> The problem is users don't often understand the processes involved in
> manufacture
>
> Any comments
>
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