[SI-LIST] magnetic permeability

  • From: jojo <jojosabre@xxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Wed, 8 Oct 2003 06:48:36 -0700 (PDT)

Hello,
 
I have a basic question in terms of accounting for the complex components of 
dielectric loss (material) as it relates to pcb or pkg substrates.
 
To keep it as simple as possible, it seems that most diamagnetic materials 
usually have a dielectric permeability constant of 1 or less.  Is it safe to 
assume a dielectic permeability constant of 1 or should this value be set 
accordingly (if data is available) to accurately compensate and predict the use 
of this component for dielectric losses? Also, has anyone done any 
investigations in deferring the use of this parameter and just using loss 
tangent and relative dielectric permittivity information?
 
Thank you for your insight.
jo
 

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