Regards, Ravinder
EMC & Signal Integrity Engineer
PCB Development and Design Department
Voice : (408) 256-7956 T/L : 276-7956 Fax : (408) 256-0550=
Email: [email protected]
[email protected]
10/29/97 05:11 AM
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Subject: Re[2]: [SI-LIST] : Decoupling capacitor selection & placemen
How does everyone feel about power/ground distributed capacitance?=
Zycon originally developed ZBC2000 - a thin FR4 (.002") power/grou=
nd
core with a capacitance of ~500pf/sq in (usually 2 cores are used)=
-
as a decoupling capacitor replacement or adjunct.
HADCO and Polyclad have developed EmCap - a 0.004" Ceramic / FR4 e=
poxy
power/ground core with 2750pf/sq in - as the next generation.
I have been doing work to predict the ability of both these produc=
ts
to replace discrete capacitors in our customers boards and would l=
ike
to hear some honest thoughts and feedback.
FYI - I'm an EE working at HADCO. I work with the electrical issue=
s in
PWB - impedance, capacitance, layout, etc. - more or less in house=
SI.
Thanks!
Todd DeRego
=