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February 9, 2010
Board Talk
Is There A Thermal Cycle Limit?
How many thermal cycles should we allow at a given location on a circuit board before we should consider the assembly compromised?  (Time 5:48) 		  Accuracy of Pick & Place System Ratings
  Cause of Defective Solder Joints
  Screen Print Stepped Stencil Review
  What Causes Exploding Solder Joints?
Ask the Experts
Conformal Coating & Humidity
Can conformal coating protect a circuit board that will be operating in a humid environment? Is there a specific process?  (Time 0:26) 		  Ultrasonic Cleaning Causing Damage
  Problem With No Clean Solder Flux Residue
  Alternatives to Conformal Coating
  Type III vs. Type IV Solder Paste
Mysteries of Science
Case Of The Disappearing Ink
UV lamps were bleaching out the blue color so that a new ink looked like a clear coating. Why didn't this happen in the lab?  (Time 0:50) 		  Tied Up Telephone Lines
  Disappearing Foamy Mattresses
  Pennies Converted To Dimes
  The Wobbly Employee and the Suspicious Bike
Tech Notes
Comparison of SAC105 and SAC305 Solders
In this paper, the thermal fatigue performance under accelerated test conditions is compared for three common BGA ball alloys.  (Time 0:41) 		  Selective Surface Mount Soldering Options
  SMT Process Characterization
  Does Contamination Effect Whisker Formation?
  Development of a New Lead-Free Alloy
Trends for Tomorrow
New Technology Boosts Airline Security
Radio frequency integrated circuits that use silicon semiconductor technology mean airports could afford to open dozens of security lines.  (Time 0:60) 		  A Search Engine Better Than Google
  Theory of Evolution Applied to Computers
  Reprogrammed Blood Cells Act Like Stem Cells
  New Search Engines Fill in the Blanks
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