February 2012


Cover Story
Benchmarking and Qualifying PCB Fabricators for Semiconductor Device Test Boards
Standardized test panels provide a sound basis for engaging with suppliers and participating in continuous improvement plans. Over time, test panel results objectively demonstrate if suppliers are attaining agreed-upon goals.
by William J. Mack

High-Speed Design
Signal Integrity and PCB Physical Parameters
How to identify various passive geometry or topography attributes common to the PCB layout, their effects and potential corrective actions.
by Carl F. Hornig

Flexible Heaters
Copperless Flex Circuits
Can a flex circuit be made using a metal foil other than copper? Absolutely. But understand differences in materials used to construct these “flexible heaters.”
by Mark Finstad


  • Caveat Lector
    The DoD fights back.
    Mike Buetow


  • ROI
    Small talk.
    Peter Bigelow

  • Focus on Business
    Adapting to uncertainty.
    Susan Mucha



  • Designer’s Notebook
    Solder layers.
    Duane Benson

  • In Flex
    Space conservation.
    Jay Desai

  • Technical Abstracts
    In case you missed it.

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