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November 22, 2022
What is Considered Acceptable PCB Rework and Repair?
What is Considered Acceptable PCB Rework and Repair?
An operator attempted to repair three damaged conductors using bus wire overcoated with epoxy. Do you consider this repair acceptable? Is there an IPC spec we should follow? Jim Hall and Phil Zarrow, The Assembly Brothers, address this question.
Board Talk
Corrosion Resistant Servers for Free-Air Cooling Data Centers
This paper describes a corrosion resistant server design suitable for reliable operation in a free-air cooling data center.
Production Floor
Keys to Component Lead Tinning Success
X-Ray Supports Quality Assurance, Counterfeit Detection
Be Selective in Partnering with a Soldering Equipment Supplier
Effects of Long-Term Storage on Mechanical and Electrical Integrity
Selective Equipment in Spec?
Why the need for 3D SPI?
Dealing with the Results of the Pandemic
Direct Immersion Gold as a Final Finish
Essential Practices for Gold Mitigation of Electronic Components
Nearshoring or Contract Manufacturing? Which Fits Your Business Model?
Ask the Experts
Initial Screen Print Test Board
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.
Ask the Experts
Circuit Insight
Circuit Insight
Microchips Could Be Used to Activate Excess Dopants
Microchips Could Be Used to Activate Excess Dopants
As microchips continue to shrink, silicon must be doped, or mixed, with higher concentrations of phosphorus to produce the desired current.
Technology Briefing
Cross-Sectioning of SMT and PCB Related Architectures
Techniques in performing precision and analytical micro-sections, which fuse the techniques common in preparation of silicon wafers and bulk materials are discussed.
Analysis Lab
Circuit Insight
Circuit Insight
Digitally Printed Battery Design
Digitally Printed Battery Design
Battery operated devices have grown smaller while energy demands have increased. This paper provides a review of battery construction.
Materials Tech
Void-Free Soldering with a New Vapor-Phase with Vacuum Technology
Equipment has been developed to achieve void-free joints under these conditions utilizing modern condensation reflow technology.
Production Floor
Circuit Insight
Circuit Insight
Ask the Experts
Stencil Pattern for Thermal Pads on QFNs
We need more information regarding the stencil pattern for thermal pads on QFNs. We know why it is important to "mesh" but need more info regarding what is best ...
Ask the Experts
Electrochemical Reliability as a Function of Component Standoff
The purpose of this paper is to research the activity of flux residues as a function of the standoff height using insulation resistance.
Analysis Lab
Circuit Insight
Circuit Insight
Why Uneven Conformal Coating?
Why Uneven Conformal Coating?
We are experiencing an issue with our conformal coating. On matte finish boards the coating is vibrating away from some others and building up in others.
Board Talk
Lead-Free Alloys with Ultra-High Thermo-Mechanical Reliability
Alpha focused on improving the properties of the bulk solder as well as controlled growth of interfacial IMCs and alloy microstructure.
Materials Tech
Supplier Spotlight
Pemtron
Based on 3D precision measurement and vision source technology, PEMTRON ...
Fabrinet
We specialize in precision optical, electro-optical, sophisticated electronic PCBA and ...
Barry Industries
Barry Industries is the leading manufacturer of passive resistive components ...
Novatec SA
In the electronics assembly industry where sophistication and complexity reign, ...
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Chip-Based Optical Phased Arrays for Steering Laser Beams in Lidar
Chip-Based Optical Phased Arrays for Steering Laser Beams in Lidar
Devices known as chip-based optical phased arrays can quickly and precisely steer light in a non-mechanical way for lidar systems.
Technology Briefing
Circuit Insight
Industry 4.0 for Inspection in the Electronics Industry
This paper investigates how the connected at-line x-ray system can improve production yield and lower costs when connected to the production line.
Production Floor
Circuit Insight
Risk for Ceramic Component Cracking Dependent
The paper discusses the differences of the alloy, based stress in ceramic components due to passive cycle tests, real customer tests, and stress analyses.
Analysis Lab
Circuit Insight
Pay Clerk Production Woes
Pay Clerk Production Woes
A company was having quality control problems. Friday morning was when the problems happened, but why just on Fridays?
Mysteries of Science
Circuit Insight
Cartoon of the Day
Cartoon
"I found you a donor for an attitude transplant."
Copyright © Randy Glasbergen

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