Electronics Assembly Knowledge, Vision & Wisdom
Sep 17, 2019
Solder Paste Printing First Pass
Solder Paste Printing First Pass
Is it recommended to print one cycle before printing the first production board? I could use a scrap board or blank plastic card for the first print. Phil Zarrow and Jim Hall, the Assembly Brothers, share their own experiences and insight.
Board Talk
Conformal Coating over No Clean Flux
The need to implement a tin whisker mitigation strategy has led to applying conformal coating over no clean residues.
Production Floor
Differences Between Through-Hole and Surface-Mount
Automating the Incoming Materials Process
Void-Free and Worry-Free
USB Connection Testing
Turning Printed Circuit Boards Into Printed Circuit Structures Using 3D Printing
Assessing the Impact of Lean on PCB Manufacturing
How To Get The Best Thermal Profile
Meter-Mix Dispensing Basics
Ask the Experts
Out-gassing and Cleaning
I have created a series of PCBs with no solder mask. I will be soldering 2 spring pins, a 0805 ceramic capacitor and a 0805 resistor to each board. There are 40 PCBs ...
Ask the Experts
Zero Emission Fuel Cells
Zero Emission Fuel Cells
Researchers have developed a fuel cell that lasts least ten times longer than current technology, making them economical for powering electric vehicles.
Technology Briefing
Reliability Study of Bottom Terminated Components
This paper covers the impact of voiding on solder joint reliability and the impact of voiding on the heat transfer characteristics for BTC components.
Analysis Lab
Signal Transmission Loss Due to Surface Roughness
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
Electrical Testing of Passive Components
Substrates have become more critical with regard to pitch and density leading to increased use of buried components. This paper reviews testing for buried capacitors.
Production Floor
Ask the Experts
Options for Reballing BGA Components
Which of the following do you recommend when reballing BGA components? Reballing with solder paste and solder spheres, or with solder spheres only? Would you change ...
Ask the Experts
Reliability Performance of Very Thin Boards
This paper shows three different manufacturing approaches, which can be used for very thin any-layer build-ups.
Analysis Lab
Should We Modify Rework Procedures for Assemblies Fabricated Using OSP?
Should We Modify Rework Procedures for Assemblies Fabricated Using OSP?
Should we modify any rework or repair procedures for circuit board assemblies fabricated using OSP, organic solderability preservatives, bare boards?
Board Talk
Conformal Coatings in Preventing Resistor Silver Sulfide Corrosion
The evaluation of conformal coatings to mitigate silver sulfide corrosion of thick film resistors is discussed.
Materials Tech
Counterfeit Goods Cost Billions
Counterfeit Goods Cost Billions
Counterfeit goods cost billions of dollars in economic losses. Researchers have created an “unclonable” tag that can never be replicated.
Technology Briefing
Rework Challenges for Smart Phones and Tablets
This paper reviews the challenges and process steps needed for successful repair of surface mount devices on very densely packaged circuit boards.
Production Floor
Tin Whisker Risk Management by Conformal Coating
This study evaluates conformal coatings for mitigation of tin whisker growth. The coatings chosen for the experiment are acrylic, polyurethane and parylene.
Analysis Lab
The Day They Shut Down Intel
The Day They Shut Down Intel
Chipmaker Intel had just started up a new chip factory when something odd caused a shut down. What lead to this development?
Mysteries of Science
Cartoon
"Everyone laughed and called me a fool, but I've spent the past 30 years watching my helium stocks go up!"
Copyright © Randy Glasbergen