wiki:PCB_Technology

Version 1 (modified by hazen, 6 years ago) (diff)

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Dielectric Properties

Dielectric Constant of the permittivity of the material to the permittivity of vacuum, and is denoted as 'Er. For FR-4 (standard PCB material) Er is about 4.5.

'Dissipation Factor 1 2 is the parasitic power loss (as heat) in the dielectric.

Article impedance formulas.

Materials/Vendors?

PCB Design] tech note from Lattice