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We have over 1000 programs in this database. Programs are sorted by published date, most recent first.


Opens With Assembled QFN Components
Opens With Assembled QFN Components
We are experiencing opens on assembled QFN components at a rate of approximately 9%. The component has two rows of pads and the failure only appears in rows near the component center. Our boards are double-side reflow and this component is mounted on the first side. What is happening?
Board Talk

Effect of Reflow Profiling on Solder Paste Flux Residues
Effect of Reflow Profiling on Solder Paste Flux Residues
Paper studied the effect of reflow profiling on the electrical reliability of no-clean flux residues using surface insulation resistance testing.
Production Floor

China's Narrow Path to 21st Century Dominance
China's Narrow Path to 21st Century Dominance
China is working to dominate the global system. Yet, contrary to what we are led to believe, China is poorly positioned to achieve global dominance.
Technology Briefing

Recent Technology Advances for X-ray Inspection
Recent Technology Advances for X-ray Inspection
This paper reviews x-ray system types and what they provide for resolution, magnification, power, pixel size and the effects of radiation damage.
Analysis Lab

Circuit Material Performance for PCBs at Millimeter Wave Frequencies
Circuit Material Performance for PCBs at Millimeter Wave Frequencies
This paper gives an overview of which circuit material properties are important to mmWave frequency applications using PCBs.
Materials Tech

Vapor Degreasing Chemistries Remove Lead-Free and No-Clean Fluxes
Vapor Degreasing Chemistries Remove Lead-Free and No-Clean Fluxes
The purpose of this paper is to present a cleaning process for difficult no-clean, lead-free and high temperature flux residues on reflowed PCBs.
Production Floor

NASA DOD Phase 2: Copper Dissolution Testing
NASA DOD Phase 2: Copper Dissolution Testing
This paper describes copper dissolution measurements of two lead-free solder alloys to better define allowable rework process windows.
Analysis Lab

No-Clean Residue Shorts
No-Clean Residue Shorts
We have a PCBA with a QFN 44 using no-clean flux. We have many test failures during testing. Are the failures due to flux reside between terminations?
Board Talk

Nano Silver Replacement for High Lead Solders
Nano Silver Replacement for High Lead Solders
This paper details mechanical and reliability testing of joints made with materials under a range of temperature, pressure and atmosphere.
Materials Tech

Will AI Make Doctors Obsolete?
Will AI Make Doctors Obsolete?
Increasing amounts of health data given to machines are "reading" and taking account of the rapidly expanding scientific literature.
Technology Briefing

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