circuit insight
April 1, 2025
Solder Joint Performance Under Shock for ENIG and ENEPIG Surface Plated Tester PCBs
Solder Joint Performance Under Shock for ENIG and ENEPIG Surface Plated Tester PCBs
This paper discusses the results of a comparative study for solder joint performance - under shock - for ENIG and ENEPIG surface plated tester PCBs. The best cost-reduction practice for Intel manufacturing is to deliver testers with high quality and reliability. Solutions with higher margins to failure will support this goal.
Analysis Lab
Voids in SMT Solder Joints – Trends in Automotive Electronics
There is a need for a more extensive coverage of voiding in standards where customer specifications often contain requirements for voiding in SMT solder joints.
Production Floor
Sponsor
Circuitnet

"Ask the Experts" Program by Circuitnet
Do you have a question or process issue in PCB assembly? The Circuitnet "Ask the Expert's" program has over 100 panel members waiting to answer your question. Submit question now.
Circuitnet Media LLC
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
Conformal Coatings - New Solutions to Existing Problems
This paper describes work carried out by Humiseal to investigate root causes of these problems, and to introduce materials with improved performance.
Analysis Lab
Rheology of Solder Paste: Shelf Life Study
This study offers a better understanding of the correlation between rheological properties and shelf life of solder paste exposed to extreme conditions.
Materials Tech
Sponsor
Aim-Solder

Bismuth in Solder Alloys
Bismuth is a primary constituent in many low-temp solders. It also serves as an additive element in SAC solders that reinforces joint durability & optimizes wetting characteristics.
AIM Solder
Pick-and-Place Feeder density within SMT and Electronics Assembly
Pick-and-Place Feeder density within SMT and Electronics Assembly
To keep up, P&P machine suppliers must increase feeder density in traditional ways or new creative innovations to better serve the end user.
Production Floor
Drop/Shock Behavior of Low Temperature Solder BGA
This study examines challenges posed by aging, a critical factor influencing the long-term performance of solder joints.
Analysis Lab
Sponsor
Circuit-Technology-Center

Essential guide for hi-rel BGA re-balling
Re-balling of BGA's with tin-lead solder is required in some hi-rel applications due to tin whisker concerns. This white paper discusses the key considerations of this specialized process. Read more.
Circuit Technology Center
Trouble With Skewed DPAK Components
We are having trouble with surface mount DPAC components skewing during reflow. We checked our profile and tried a diagonal hatch aperture.
Board Talk
Solder Paste Selection for Bottom Termination Components Attach
Solder Paste Selection for Bottom Termination Components Attach
Two solder paste chemistries and several printing parameters were evaluated in order to achieve consistent solder paste deposition across the assembly.
Materials Tech
Carbon Dioxide and Lignin Offer Alternative to Traditional Plastic
Carbon Dioxide and Lignin Offer Alternative to Traditional Plastic
Researchers have created a potential alternative to traditional petroleum-based plastic made from carbon dioxide, plus lignin, a component of wood.
Technology Briefing
Sponsor
ECD

Vapor Phase Profiling
Thermal profiling the vapor phase soldering process – especially those with vacuum – is challenging. ECD's M-VP™ sealed barrier can take it. Learn more.
ECD
Filling of Microvias and Through Holes by Electrolytic Copper Plating
This paper describes the reasons for development and a roadmap of dimensions for copper filled through holes, microvias and other copper plated structures on PCBs.
Production Floor
Optimizing Throughput and Cost with Manufacturing Simulation
This paper describes the design and implementation of several manufacturing simulation use-cases at an electronics assembly factory in Nanjing, China.
Analysis Lab
Sponsor
Master-Bond

Two Part, Room Temperature Curing Epoxy
Master Bond EP39MAOHT is a thermally conductive, electrically insulative adhesive with low exotherm, suitable for large castings and potting applications.
Master Bond
Process Change Causes Spots
Process Change Causes Spots
After implementing line improvements, tiny bright spots appeared on the surface of newly made circuit boards. What was the cause?
Mysteries of Science
Glass Panel Packaging: Technologies and Applications
This paper describes the critical glass packaging technologies, their R&D and commercialization status as well as all the current and future applications.
Production Floor
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
Oxide Alternative Process for High Frequency Bonding Applications
This paper highlights the challenges made with conventional Sulphuric-Peroxide based Oxide Replacement bonding enhancement system.
Analysis Lab
Ductile Low Temperature Solders for Mass Production of Assemblies
This paper reports results of the behaviour of Sb in a Sn-Bi alloy and consider the implications of the findings for the reliability of LTS solder joints.
Materials Tech
The Versatile Preform
The Versatile Preform
This paper discusses attributes within the solder families that the preforms are composed of and considerations when considering solder preforms.
Production Floor
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100+ Repair and Rework Guides Online!
Sponsor
Glenbrook-Technologies

Scoring Big With Glenbrook's Real-Time X-Ray Inspection
Jewel Box 70T helps East/West Manufacturing ensure accurate assembly of complex boards, for a system delivering statistics in seconds. Read more
Glenbrook Technologies
Questions and Comments
Palm Size Portable 3 Printer
Impressive start. I look forward to further reports on the ...
Jaye Waas, Renkus-Heinz
Impact of PCB Manufacturing, Design, and Material to PCB Warpage
Symmetrical stack ups and copper distribution is key to maintaining ...
Gerry Partida, Summit Interconnect
Additive Manufactured Electronics for Next Generation Microelectronics
AME is necessary to manufacture advanced electronics do to need ...
Voya Markovich
MORE COMMENTS
Peel-A-Way Removable Terminal Carriers
Sponsor
Smart-Sonic

440-R + Ultrasonics = Safe & Efficient Cleaning
Low power density ultrasonic cleaners combined with 440-R-SMT detergent provide safe and effective cleaning of stencils, pallets, misprints & SMD adhesives.
Smart Sonic
Cartoon
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