[SI-LIST] Re: Decoupling capacitors
- From: "Shawn Arnold" <sarnold@xxxxxxxxxxxxxxxxxx>
- To: <wcooke@xxxxxxxxxxxxx>
- Date: Wed, 8 May 2002 08:59:53 -0700
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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