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Knowledge, Vision & Wisdom Apr 2, 2015
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? Does it make a difference?
Board Talk
Recommendations for PCB Surface Finish
We would like to order bare PCBs with a surface finish that would work with our current leaded process and lead-free solder process. What finish do you recommend?
Ask the Experts
Influence of Salt Residues on BGA Head in Pillow
Influence of Salt Residues on BGA Head in Pillow
In this paper, a series of experiments was carried over to know the influence of specifically NaCl on BGA wetting given Head in Pillow (HiP) as result.
Production Floor
Six Fast Fixes for Circuit Boards
CircuitMedic
Use this versatile kit to fix damaged SMT pads, lands, gold edge contacts, conductors, plated holes and base board. The world's #1 first-aid kit for circuit boards.
CircuitMedic
 
3-in-1 SMT Production Center
Essemtec
Looking for a SMT production center that is able to jet solder paste and/or glue and mount components in one machine? Click here to see Paraquda in action...
Essemtec
 
Preparation for Mitigating Tin Whiskers in Alternative Lead-Free Alloys
Preparation for Mitigating Tin Whiskers in Alternative Lead-Free Alloys
This work expands the understanding of the growth mechanism for tin whiskers and what mitigation strategies can be employed to reduce their propagation.
Analysis Lab
Networked Intelligence Reshapes Our World
Just as railroads, electricity, and automobiles reshaped the world in the 19th and 20th centuries, the 21st century is being reshaped by ubiquitous networks of cheap smart devices.
Technology Briefing
A World of Selective Soldering Solutions
Vitronics Soltec
Vitronics Soltec's selective soldering machines exceed customers' expectations. Varitron Technologies says their 6746 "is practical and backed 100%!"

Vitronics Soltec
 
Employment opportunities at Hallmark Circuits
HallmarkCircuits
Hallmark Circuits, manufacturer of high technology circuit boards in San Diego area is expanding. Opportunities for Process Engineer, Planner, Cam Technician & Data Receipt Trainee. Click to learn more learn more.
Hallmark Circuits, a SOMACIS Company
 
Stencil Printing Yield Improvements
Stencil Printing Yield Improvements
In this paper two methods were studied to improve solder paste release. A nano-scale hydrophobic, oleophobic and adhesion promoting coating.
Production Floor
Effect of Gold on Reliability of SnAgCu Joints
Little is known about the effect of gold content on the reliability of tin-silver-copper solder joints. This study determines the acceptable level of gold in SAC305 solder joints.
Analysis Lab
Master Bond
 
Juki
 
Solder Balls During Rework
Solder Balls During Rework
During the rework of SMT components on conformal coated boards, we see solder balls appearing at neighboring components. How can this be eliminated?
Ask the Experts
Low Surface Energy Coatings Rewrite Area Ratio Rules
Paper focuses on the attributes that affect properties of solder paste release and introduces the effects of surface free energy that make up the stencil printing process.
Materials Tech
Underfilling Using Continuous Path Motion
Asymtek
White paper for underfill applications and using continuous motion of the dispense head to avoid backtracking and improve units per hour by 27%. Download now.
Nordson ASYMTEK
 
In A QFN Quagmire?
ITM Consulting
Got the BTC Blues? ITM has expertise and experience in finding and mitigating electronic assembly defects and problems. ITM solves problems!
ITM Consulting
 
Step Stencil Setup
When shifting from standard solder paste stencils to step stencils, should we change the pressure or attack angle? What about other settings?
Board Talk
The Challenges of LGA Server Socket Trends
The Challenges of LGA Server Socket Trends
This paper discusses the challenges and some potential solutions for sockets used in the high end server market.
Production Floor
Why Use Parylene Conformal Coating?
Diamond MT
Parylene is the ultimate conformal coating for the protection of devices, components and surfaces in the electronics industry. Learn more ...
Diamond MT
 
Static Prevention Products for Electronics
Ellsworth Adhesives
Ellsworth Adhesives provides Electronics Assembly, Rework, Repair, and Static Control products from ACL Staticide including cleaners, wipes, mats, and instrumentation.
Ellsworth Adhesives
 
         
Connecting a Trillion Battery-Free Devices
Connecting a Trillion Battery-Free Devices
Engineers have designed a new communication system that uses radio frequency signals as a power source to provide Internet connectivity to battery-free devices.
Technology Briefing
Circuit Technology Center
Evaluation of New SMT Stencil Materials
Evaluation of New SMT Stencil Materials
This paper covers a study undertaken to quantify the effects of stencil materials on paste deposition in high volume production processes.
Analysis Lab
Shadow Areas Cure with Ambient Moisture
Dymax Corporation
Conformal coatings for shadow areas on PCBs cure with light, then over time with secondary moisture. Guide explains benefits of light-cure technology!
DYMAX Corporation
Solder Mask Ghosting
Solder Mask Ghosting
Some here are convinced that we have solder mask ghosting on PCBs because our global suppliers are not curing the mask sufficiently.
Ask the Experts
eSurface is the Game Changer for the PCB Industry
eSurface
eSurface enables you to: • Achieve Ultra-fine capability < 1/1 L/S; • Dramatically improve yields; • Reduce steps & cycle times; • Maximize efficiency
eSurface
The Frustrating Filter Fix
The Frustrating Filter Fix
A color film production facility was having a serious quality control problem and the building air filters were at the top of the suspect list.
Mysteries of Science
2015 IPC Certification Training Schedule
EPTAC
IPC Certification training schedule, new classes, new locations and all the expert training and support you need and expect. Learn more.
EPTAC
EPTAC
Cartoon
"As a compromise, you can keep your job but we'll send your paycheck overseas."
Copyright © Randy Glasbergen