[SI-LIST] Re: Areas of research
- From: "Salkow, Steven" <steven.salkow@xxxxxxxx>
- To: John Blanchard <john.blanchard77@xxxxxxxxxxxxxx>
- Date: Wed, 22 Apr 2009 17:50:47 -0700
John:
There is a lot of interest today in High Density Interconnect, Thermal
Coefficient matching those of the BGA that get mounted to them, higher
speed designs requiring improved properties while still being reasonable
to manufacture, alternatives to Plasma etch back (more drillable
materials), via in pad will fill and planarization, buried R's using
inkjet. A way to get good ideas is to offer to help a high tech PCB
fabricator solve problems they are having. Higher aspect ratios are an
area of interest. Necessity is the mother of invention. You could verify
the various Broadside coupled impedance equations that have been
published and compare these. (search google for : broadside equation
impedance
Get back to me if you do that work. I would be interested.
Steven Salkow
Lockheed IS&GS
3110 Zanker Rd, San Jose
Ca. 95134
steven.salkow@xxxxxxxx
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of John Blanchard
Sent: Friday, April 17, 2009 1:15 AM
To: Jack Olson
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Areas of research
Hi Jack,
I posted this question with the risk of being lambasted :). I know there
are
a lot of people who have done great amount research in these
technologies. I've some research interest in PCB materials/dielectrics
and
its effect going forward. Also, I was thinking about micro via
technology
and with the miniaturization of the products, its effects in terms of
manufacturability and also the impact on interconnects, embedded actives
and
passives is also another area of interest. Being an electronic engieer
by
qualification, I've not had a great amount of expousre on manufacturing
technologies, but I believe manufacturing is the key going forward with
electronic product development with the increased shrinking in the
package
sizes. I'm not looking for a straight answer that I could take up as a
research theme, but more of an discussion and an idea on which I could
develop on.
And I've not found any universities doing research dedicated to PCBs,
but
I'm sure the material science divisions or the nanotechnology centers
might
offer something.
Regards,
John
On 4/17/09, Jack Olson <pcbjack@xxxxxxxxx> wrote:
>
> For me, that was a top ten bizarre question of the year.
>
> You've worked most of a career in PCB development but
> ask someone else what you want to research?
> I would suggest you start what with you're interested in.
> Otherwise, the Electrical Conductor Spacing Table 6.1
> in IPC-2221 could use a serious overhaul
> http://frontdoor.biz/PCBportal/clearance.gif
> (100V needs .13mm but 101V needs .4mm? really?)
>
> Otherwise, sorry to respond without any useful advice,
> but that just struck me as such a strange question!
> It reminded me of the day my parents told me I could
> move back into my old room if I went back to school, ha.
>
> Anyway, (sorry for blurting) I'm curious which universities
> are doing PCB research these days?
>
>
> On Thu, Apr 16, 2009 at 5:01 PM, John Blanchard <
> john.blanchard77@xxxxxxxxxxxxxx> wrote:
>
>> Hi,
>> I'm currently looking to pursue a research in the field related to
printed
>> circuit boards in one of the universities. I've worked most of my
career
>> in
>> the field of design/development/manufacturing of PCBs. I'm still
unable
>> to pick up an area of research to work on. I'm looking for inputs
from the
>> experts on this group. It would be of great help if you guys can
point me
>> to
>> some resources/publications or even suggest a potential area which I
can
>> then develop on.
>>
>> Regards
>> John
>>
>>
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