Changes between Initial Version and Version 1 of PCB_Technology


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Timestamp:
Nov 8, 2013, 10:17:54 AM (6 years ago)
Author:
hazen
Comment:

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  • PCB_Technology

    v1 v1  
     1== Dielectric Properties ==
     2
     3[http://en.wikipedia.org/wiki/Dielectric_constant Dielectric Constant]
     4of the permittivity of the material to the permittivity of vacuum, and is denoted
     5as ''''Er'''.  For FR-4 (standard PCB material) Er is about 4.5.
     6
     7''''Dissipation Factor'''
     8[http://composite.about.com/library/glossary/d/bldef-d1727.htm 1]
     9[http://www.everything2.com/index.pl?node_id=1475054 2]
     10is the parasitic power loss (as heat) in the dielectric.
     11
     12[http://ohm.bu.edu/~hazen/Papers/diff_z.pdf Article]
     13impedance formulas.
     14
     15== Materials/Vendors ==
     16
     17* Low-loss dielectric materials:  Rogers 4350, GETEK, or ARLON.
     18 * See [http://joule.bu.edu/~hazen/DataSheets/Lattice/tn1033_hispeed_pcb.pdf High Speed
     19PCB Design] tech note from Lattice
     20 * [http://www.rogerscorporation.com/index.htm Rodgers]
     21   [http://www.rogerscorporation.com/mwu/pdf/ro4000ds_4.pdf datasheet]
     22 * [http://www.arlon-med.com Arlon] CLTE [http://www.arlon-med.com/CLTE.pdf datasheet]
     23
     24