Technical Papers
An Eight-Step Methodology for Bringing a Process Under Statistical Control
Bismuth in Solder Alloys: From Bulk Constituent in Low Temp to Performance Enhancer in High Rel
Plasma as a Key Technology: Increasing Efficiency and Quality Assurance in the Electronics Industry
Use of Numerical Simulation Methods for the Development of Thermal Systems & Coating Equipment
Recent Advances in Final Finishes Push Past the Limits of Conventional Electrolytes
Smart pH Employment in Electronic Cleaning
Mastering the EV Revolution with Expertise in High-Voltage & E-Mobility
Reflow Oven and Wave Soldering Machine Maintenance Cleaning
MORE TECHNICAL PAPERS
Ask the Experts
BGA reballing question
Conformal Coating Press Fit Connectors
Dust contamination after selective soldering
Moisture Sensitivity Level for Bare Boards
Contamination Using Solvent Dispensers
Challenges Placing RF Shields During SMT Assembly
Seeking Advise for a Solder Reflow Recipe
Critical Part Fixture During Reflow
MORE ASK THE EXPERTS
Latest Industry News
Worldwide Smartphone Shipments Grew 6.4% in 2024, Despite Macro Challenges
VIEWPOINT 2025: Curt Couch, Vice President & Renee Couch, President & CFO, Count On Tools, Inc.
How Foxconn's Decisions Could Impact Employment in India?
Dockworkers Secure Deal to Avert Another Strike
China considers selling TikTok U.S. operations to Musk, Bloomberg reports
MORE INDUSTRY NEWS
January 14, 2025
Demise of the Plated-Through Hole?
Demise of the Plated-Through Hole?
How long will the industry continue to use through hole components? I can envision connectors being used for some time, what about component types? Phil Zarrow and Jim Hall, The Assembly Brothers, discuss this question.
Board Talk
The Dynamics of Low Stress Epoxy Curing
This study compares uniform variable frequency microwave (VFM) field cure to standard oven curing at temperatures below Tg (transition temperature).
Production Floor
Robotic Systems Perform Experiments Speeding Up Research
Robotic Systems Perform Experiments Speeding Up Research
Robotic systems can perform experiments without fatigue, speeding up research. Robots execute experimental steps with greater consistency than humans.
Technology Briefing
Analysis to Predict Deformation and Warpage of Optoelectronics Package Lids
Deformation in optoelectronics lidded electronics packages is studied. Experimental methods provide more realistic measurements of the deformation for actual packages.
Analysis Lab
Cu Conductive Paste as Via Filling Materials for Various Substrates
Cu Conductive Paste as Via Filling Materials for Various Substrates
In this study, we developed a Cu paste that can be used as a filling material for through silicon via (TSV), through glass via (TGV), and organic substrates.
Materials Tech
Design for Testability to Overcome Functional Board Test Complexities
In this paper the author reviews how Design for Testability techniques can be an effective way to reduce functional board test programming complexity.
Production Floor
CU Core Column Enables Fine Pitch & High-Density 3D Packaging
The diameter, length, and aspect ratio of the Cu core columns and how to optimize the dimensions of the Cu core column is discussed.
Analysis Lab
Assembling Boards with BGAs on Both Sides
Assembling Boards with BGAs on Both Sides
What are the pros and cons of assembling circuit boards with BGA components on both sides? Should we first place BGAs on side one or side two?
Board Talk
The Effect of Sb and Ag Addition on the Behavior of Sn-Bi LTS
This study focuses on the changes in melting and solidification behavior of near-eutectic Sn-Bi alloys with Sb (0.5-2wt%) and Ag (0-1wt%) additions.
Materials Tech
Flexible Sensors Provide Versatility or Wearable Electronics
Flexible Sensors Provide Versatility or Wearable Electronics
Robots are becoming more agile and wearable electronics' traditional silicon-based sensors won’t make the cut in many applications.
Technology Briefing
A New Line Balancing Method
In this paper the authors present a new method of handling an assignment problem for hybrid manual and robotic assembly mixing lines.
Production Floor
Accuracy Validation Finds Hidden Problems Affecting DPMO
This paper discusses individual process step validation methods with real examples of improvement that contribute to defect per million opportunities (DPMO) reduction.
Analysis Lab
Cloudy Copper Plating Bath
Cloudy Copper Plating Bath
At a circuit shop near Los Angeles there was trouble with the copper plating line. Was an impurity getting in the tank and how?
Mysteries of Science
Strain During Press Fit Connector Insertion in PCB Assembly
Locations closer to the insertion site experienced the highest level of strain, which progressively decreased further from the insertion location.
Production Floor
Researchers Incorporate Machine Learning Into Brain-Computer Interface
Researchers Incorporate Machine Learning Into Brain-Computer Interface
Researchers incorporated machine learning into the brain-computer interface. This solution can understand the needs of a subject and self-calibrate.
Technology Briefing
Solder Ball Joint Reliability with Electroless NI-PD-AU Planting
The influence of Pd film thickness in electroless Ni/Pd/Au plating on the solder ball joint reliability after reflow cycles and thermal aging was investigated.
Analysis Lab
Reliability of New SAC-Bi Solder Alloys in Thermal Cycling with Aging
Reliability of New SAC-Bi Solder Alloys in Thermal Cycling with Aging
The effect of micro-alloying to SAC based solder materials on component reliability was studied, considering various factors of solder paste and surface finish.
Materials Tech
Complex Board Design Induced Solder Separation Failure
The study elaborates the parameters with the solder separation failure per board design configuration, and also provides the potential solution to mitigate the failure.
Production Floor
Board Talk
Demise of the Plated-Through Hole?
Assembling Boards with BGAs on Both Sides
Simple Test for Flux Penetration
5 vs 8-Zone Ovens
Problem Meeting Minimum Hole Fill During Wave Soldering
BGA Components and Coplanarity
What is Ideal Humidity for Final Assembly?
What is Solder Paste Working Life on a Stencil?
MORE BOARD TALK
Questions and Comments
What Rate is World Class for SMT Machines?
So many comments here and no hard numbers, so as ...
Robert Gray
Should Apertures be Home Plate or Inverted Home Plate?
I do the same thing as Steve O'Brien. It also ...
Richard Stadem, General Dynamics Mission Systems
Top Side Reflow Causing Solder Balls
Just a quick note. I agree with your comments however ...
Leo Lambert, EPTAC
MORE COMMENTS
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