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Knowledge, Vision & Wisdom Apr 23, 2015
Conductive Epoxy: Pros and Cons
What are the advantages and disadvantages of electrically conductive epoxies? Phil Zarrow and Jim Hall, stick to the basics.
Board Talk
Gold Plated Hole Defects
After wave soldering there are often portions of gold plated holes that still have exposed gold. What is the best way to insure we get full solder coverage?
Ask the Experts
3D Printable Robots
3D Printable Robots
MIT researchers demonstrated the promise of printable robotic components that, when heated, automatically fold into prescribed 3D configurations.
Technology Briefing
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A Novel Conformal Back-Up Material
A Novel Conformal Back-Up Material
Paper presents a new technology and process in mechanical drill backing material designed to be used in rigid multilayer, rigid-flex and flex circuits.
Materials Tech
Process Control and Reliability of Reworked BGAs
The lead-free solder does not wet metal surfaces as well as traditional tin-lead metallurgy. This narrows down the process window for lead-free solder.
Production Floor
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Fracture of Lead-Free Solder Joints
This study extended the quasi-static approach to treat solder joint fracture under higher strain-rate loading conditions.
Analysis Lab
Enabling High-Speed Printing Using Low Cost Materials
Enabling High-Speed Printing Using Low Cost Materials
Building on our expertise and testing, this paper will highlight the two trains of thought with specific focus on how low-cost materials affect print performance.
Production Floor
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Wave Soldering Problems
Wave Soldering Problems
We are seeing many process defects that occur after wave soldering operations. Can you provide suggestions?
Ask the Experts
Natural Disasters and Business Disruption
As we move further into the 21st century, businesses in the electronics industry will face increasingly turbulent times.
Supply Chain
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What is an Acceptable Level of Exposed Copper?
What is an Acceptable Level of Exposed Copper?
Is there an acceptable level of exposed copper on gold plated circuit boards where all the conductors are gold plated?
Board Talk
Insertion Loss Comparisons of High Frequency PCBs
Printed Circuit Boards (PCB's) have been used for many years in low loss, high frequency microwave applications and many of these circuits have become increasingly complex.
Materials Tech
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New Transistor Mimics the Brain
New Transistor Mimics the Brain
Scientists at the Harvard School of Engineering and Applied Sciences have created a new type of transistor that mimics the behavior of a brain synapse.
Technology Briefing
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Cleanliness of Stencils and Misprinted Boards
Cleanliness of Stencils and Misprinted Boards
This paper covers how control of a stencil cleaner's cleaning ability is possible, but requires assiduous discipline in maintaining a preventative maintenance program.
Production Floor
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No Clean Flux Stains
We're using a no-clean flux which is causing a lot of flux staining on the circuit boards. Any suggestions?
Ask the Experts
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Solder Alloy Leads to Broken Glass
Solder Alloy Leads to Broken Glass
A manufacturer of defroster windows was breaking thousands of dollars of windows due to a soldering problem. What was causing a change in the solder alloy?
Mysteries of Science
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"Remember, no thinking outside of the box!"
Copyright © Randy Glasbergen