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Knowledge, Vision & Wisdom Feb 2, 2015
Solder Paste Inspection - When and Why
Folks at our facility are pushing us to purchase a 3D solder paste inspection system. Are these systems common and under what condition should we consider buying one? Phil Zarrow and Jim Hall, the Assembly Brothers, provide insight.
Board Talk
Reworked BGA Bridging at the Corners
Recently reworked BGA components are bridged at the corners. What caused the corners of the BGA component to bridge and how can we prevent it?
Ask the Experts
Final Finish Specifications Review
Final Finish Specifications Review
Specifications are consensus documents agreed upon by a panel of industry participants composed of suppliers, manufacturers, assembly houses and users.
Analysis Lab
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Embedded Components from Concept-To-Manufacturing
Use of embedded components has grown significantly in the defense, aerospace, telecommunications, medical and consumer markets.
Production Floor
Surface Finish Effect on Creep Corrosion in PCBs
Surface Finish Effect on Creep Corrosion in PCBs
In this study, the major focus was the investigation of creep corrosion on PCBs with 3 different types of common surface finishes.
Materials Tech
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American Manufacturing Resurgence
American Manufacturing Resurgence
Between 2000 and 2009 the US lost 6 million manufacturing jobs. But there are now reasons why American manufacturing is currently making a comeback.
Technology Briefing
Signal Transmission Loss Due to Surface Roughness
In this research, parameters of various types of transmission line structures on an evaluation board were measured and analyzed in detail.
Materials Tech
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Test Probe Problems After Pin-In-Paste
Test Probe Problems After Pin-In-Paste
We are having test probe contact issues with our Pin-In-Paste process. Should all the flux vaporize off in the reflow process? Any suggestions?
Ask the Experts
Challenges of Manufacturing with Printed Circuit Board Cavities
Cavity design and assembly issues identified during the design of experiments, the findings, reliability results, and conclusions are discussed in this paper.
Production Floor
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How Many Fiducials Per Stencil
How Many Fiducials Per Stencil
We have seen as many as 180 fiducials per stencil with a step and repeat, or what I would call a multi-up panel. Is this excessive? How many fiducials are recommended for a typical solder paste stencil?
Board Talk
Hand Sanitizers and Risks to Electronics
This paper examines typical hand sanitizers and hand lotions and their impact on high reliability electronic hardware.
Analysis Lab
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New Super Thin Imaging Platform
New Super Thin Imaging Platform
An atomically thin material developed at Rice University may lead to the thinnest-ever imaging platform.
Technology Briefing
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Dispensing Underfill Can Be Tricky Business
Dispensing Underfill Can Be Tricky Business
Dispensing underfill can be a tricky process due to the fluctuating temperature in the work envelope.
Production Floor
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MSD Components Baked Too Long
MSD Components Baked Too Long
If MSD components are baked for more time than specified in J Std, can this cause potential failures or other problems? For example, components baked at 125C for 68 hours instead of 48 hours.
Ask the Experts
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Was It Acid Rain Itch?
Was It Acid Rain Itch?
Something in Jean's environment was not agreeing with her and it was causing her skin to itch. Could acid rain be the cause?
Mysteries of Science
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"It's your attitude, not you aptitude that determines your altitude. That's the philosophy that got me kicked out of pilot school."
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