| September 6, 2017
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When surface-mount components started to take over, edging out through-hole components, a number of hot air-based rework systems appeared on the scene. Many were large, some small, but all had various means of delivering hot air to the component with varying degrees of process control. Despite their diversity, they all had one thing in common -- they were fine for removing components from a circuit board, but none were particularly ...
Feature Story
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We are conducting rework that includes soldering a wire to one end of a heat sensitive multilayer ceramic chip capacitor. We need to solder the wire to one end of a ceramic chip cap while the other end is soldered to a PCB land. Since ceramic capacitors are sensitive to thermal shock, how should we proceed? Which end should be soldered first ...
Ask the Experts
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This paper discusses the five rework gaps and challenges including identification of the key technical process challenges, outlining in detail the efforts-to-date aimed at addressing these new challenges as well as the next steps required for complete resolution of these challenges ...
Technical Library
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From time to time, gold edge contacts become contaminated with solder. This most often occurs during reflow of an assembly and may be caused by solder spatter or solder paste contamination of the contacts due to improper handling, or other reasons. Solder contamination is certainly an unacceptable condition because oxidation will ultimately ...
Feature Story
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Innovation and regulatory evolution have shaken up the personal avaiation industry. What barriers remain? What are the implications for commuters ...
Technology Briefing
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"Instead of raising your pay, would you be okay if I just lowered everyone else's pay?"
Copyright © Randy Glasbergen
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Trivia
What percentage of pure gold is in 18-carat gold?
See the answer below.
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Quote of the Week
If computers get too powerful, we can organize them into a committee -- that will do them in.
Bradley's Bromide
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