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Knowledge, Vision & Wisdom Dec 6, 2016
Can You Trust Pick & Place Machine Ratings?
For estimating equipment capacity, why can't we use the Pick and Place manufacturer's rating for components per hour? They design the machines, don't they? The Assembly Brothers, Phil Zarrow and Jim Hall, answer these questions.
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
Selecting Fluxes for Lead-free Selective Soldering
Selecting Fluxes for Lead-free Selective Soldering
Paper touches on identifying flux properties, selecting low solids fluxes for lead-free selective wave, the soldering process and testing.
Production Floor
 
 
Automated Program Synthesis
Automated Program Synthesis
Researchers are using a new model of programming called "automated program synthesis," where computers generate pieces of code based on a user's intent.
Technology Briefing
Influence of Manufacturing Quality on Thermomechanical Stress of Microvias
The advancement of area-array packages has driven the adoption of high density interconnects that allow for an increased I/Os.
Analysis Lab
 
 
Predictability for PCB Layout Density
Predictability for PCB Layout Density
This paper covers the use of a new tool called a "Predictability Calculator" to predict PCB layout density.
Materials Tech
Flexible Fixturing System for In-Circuit Test
Paper describes a flexible fixturing system which overcomes the cost and tooling cycle times inherent with traditional BoN fixtures.
Production Floor
 
 
Ask the Experts
Problems with Blow Holes
We are having problems with what appear to be blow holes. Could the cause be due to an improper ratio of the lead to the hole?
Ask the Experts
Comparison of Solder Paste Residues
Paper assesses the reliability of several lead-free, no clean paste residues after vapor phase reflow in comparison to convection reflow.
Analysis Lab
 
 
What Rate is World Class for SMT Machines?
What Rate is World Class for SMT Machines?
What rate is considered world class when it comes to pick performance for SMT placement machines? Can you define pick performance?
Board Talk
Lead-free Board Materials Reliability Project
Paper covers results from 20 laminate materials. Relationship between moisture uptake and material survivability reflow is discussed.
Materials Tech
 
 
         
Robots At War
Robots At War
The U.S. military's successful deployment of drones in combat provides a glimpse into the future of warfare.
Technology Briefing
High Lead Count SMT Connector Rework
This paper will examine the difficulties of reworking a very high thermal mass, high density, 5040 lead count surface mount connector.
Production Floor
Ask the Experts
Stencil Tension
Should we have a tension meter in our SMT assembly area? What is the acceptable stencil mesh tension to maintain good solder paste prints?
Ask the Experts
Headaches at the Factory
Headaches at the Factory
A factory was experiencing health complaints from workers. What was causing the workers to experience these health problems?
Mysteries of Science
Cartoon
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