FreeLists / si-list / [SI-LIST] Re: Decoupling capacitors

["Shawn Arnold" <sarnold@xxxxxxxxxxxxxxxxxx>]

Please see the following link, page 8, of the PDF for the Micro/Q DIP, BGA,
and PLCC/PGA capacitors.

http://www.cci-msc.com/rigid/images/CCI%20PC%20board%20stiffeners.pdf

Sincerely,
Shawn Arnold
International Product Design Inc.

----- Original Message -----
From: "Wayne Cooke" <wcooke@xxxxxxxxxxxxx>
To: <Michael_Greim@xxxxxxxx>; <si-list@xxxxxxxxxxxxx>
Sent: Wednesday, May 08, 2002 8:03 AM
Subject: [SI-LIST] Re: Decoupling capacitors


> Hi Michael,
>
> I believe these were called "Micro/Q" capacitors, and were made by Circuit
> Components Inc.  I am not a "vintage engineer", but I read about these in
> Howard Johnson's book "High-Speed Digital Design, a Handbook of Black
> Magic".  If you have this book, they are on page 289.
>
> Wayne Cooke
> Signal Integrity Engineer, Innovance Networks
> 19 Fairmont Ave, Ottawa, Ont. K1Y 1X4
> Tel: (613) 798-9293
> email: wcooke@xxxxxxxxxxxxx
>
>
> -----Original Message-----
> From: Douglas C. Smith [mailto:doug@xxxxxxxxxx]
> Sent: Wednesday, May 08, 2002 10:45 AM
> To: Michael_Greim@xxxxxxxx
> Cc: Alexander.Shapira@xxxxxxxxxx; si-list@xxxxxxxxxxxxx; Dieter
> Eisenlohr
> Subject: [SI-LIST] Re: Decoupling capacitors
>
>
>
> Hi Michael,
>
> I remember those capacitors. They were made by a company that also made
> little bus bars that were used to carry power and ground around on two
> layer boards. I don't remember the manufacturer, but if I do I will let
> you know. I have copied this email to Dieter Eisenlohr. There is a good
> chance he will know the answer.
>
> Doug
>
> Michael_Greim@xxxxxxxx wrote:
> >
> > On a non dissimilar tangent, I was generating
> > a historical piece on the evolution of decoupling
> > and ran into a memory hole that I was hoping
> > that you could help me with.  Back in the mid
> > 80s when we still had dips with power pins on the
> > corners, there was a flat capacitor that would
> > fit under the chips and whose leads would fit into
> > the same holes as the dip power pins, making contact.
> > I used these all the time, but for the life of me
> > can't remember what they were called.  Does anyone
> > remember this ancient technology and what it was
> > called?  Thanks for the help.  Vintage engineers,
> > where are you???  Any other interesting stories or
> > technology from the dark ages would be much appre
> > ciated.
> >
> >
> >
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>
> --
> -------------------------------------------------------
>     ___          _       Doug Smith
>      \          / )      P.O. Box 1457
>       =========          Los Gatos, CA 95031-1457
>    _ / \     / \ _       TEL/FAX: 408-356-4186/358-3799
>  /  /\  \ ] /  /\  \     Mobile:  408-858-4528
> |  q-----( )  |  o  |    Email:   doug@xxxxxxxxxx
>  \ _ /    ]    \ _ /     Website: http://www.dsmith.org
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>
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>

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