December 2005 Issue Print E-mail
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Wednesday, 30 November 2005 19:00

December 2005 cover

FEATURES

  • Cover Story
    Surface Oxidation as a Tin Whisker Growth Mechanism
    This study found that oxidation of tin coatings accelerates whisker formation. This may be related to a change in the state of stress in the surface. Moreover, a little bit of humidity can go a long way toward increasing the rate of whisker growth.
    W. John Wolfgong, Ph.D., Bob Ogden, Robert Champaign and Barbara Waller

  • Dispensing
    Gauging True Speed and Accuracy
    Accuracy specifications rarely give a solid feel for what platforms are capable of or how tests are run. Proposed: new standards for measuring throughput based on production floor environments.
    Hugh Read

  • Pb-Free Transition
    Switching to Pb-Free: Reflow Soldering
    Unlike wave soldering systems, which directly contact Pb-free solder alloys, changing reflow, selective soldering and hand soldering equipment is easier. But it is not necessarily easy.
    Markus Walter

  • Antenna Materials
    Novel Conductive Inks for Smart Label Applications
    A new family of highly conductive silver inks for smart card and label antennas achieve significantly better and more stable electrical performance, using lower antenna profiles.
    Paul Berry, Marjorie Dwane, Greg Butch and Denley Baghurst

  • Equipment Sourcing
    Purchasing Manufacturing Process Equipment
    One man's hypotheses on the procurement process, and why buyers are not only purchasing the equipment but the supplier.
    Joe Belmonte

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On the cover: Tin whiskers protruding from a tin-plated surface. (Photo courtesy Raytheon)

Last Updated on Tuesday, 07 February 2012 09:46
 

Columns

Eastern-US: China’s New Competitor?

Parity emerges among EMS Factories from Asia, Mexico and the US.

For the first time in years we see parity in the Eastern US among EMS factories from Asia, Mexico and the US. This EMS market condition will permit American OEMs (the EMS industry refers to OEMs as customers) to have more EMS pathways to choose from. Now more than ever, such EMS assignments will require deeper investigation relating to the OEMs’ evaluation of manufacturing strategies.

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The Human Touch

For those who count on the electronics industry for big feats, it’s been a remarkable couple of years.

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Features

Advances in Concentration Monitoring and Closed-Loop Control

Contaminated bath water skews refractive index results. New technology can accurately measure aqueous cleaning agent concentration.

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Circuits Disassembly: Materials Characterization and Failure Analysis

A systematic approach to nonconventional methods of encapsulant removal.

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