Contamination, Defects, Whiskers



These programs cover problems and solutions associated with contamination, defects, tin whiskers and more.
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Risk and Solution for No-Clean Flux Not Dried Under Components
Risk and Solution for No-Clean Flux Not Dried Under Components
In this work, a new halogen-free no-clean SnAgCu solder paste, 33-76-1, has been developed.
Production Floor

OEM and EMS to Combat Head on Pillowing Defects
OEM and EMS to Combat Head on Pillowing Defects
This paper evaluates AXI results from different machine platforms and results from similar platforms operating at different facilities.
Analysis Lab

What Causes Board Delamination?
What Causes Board Delamination?
We are experiencing delamination on printed circuit boards, is there a way to determine that this is caused by moisture or some other defect?
Board Talk

Sticky Residue Under Low Clearance Parts
Sticky Residue Under Low Clearance Parts
We are finding a tacky substance under a large SMT component. Is this common when no-clean leaded solder paste is used with no clearance parts?
Board Talk

Tin Whisker Testing and Modeling
Tin Whisker Testing and Modeling
The elimination of lead from consumer electronics has resulted in an increase in tin whisker risk mitigation using dual-use commercial/aerospace components.
Analysis Lab

Surface Mount Warpage Case Study
Surface Mount Warpage Case Study
A quantity of surface mount packages were measured by shadow moire metrology to capture warpage levels, as they were heated through a reflow profile.
Analysis Lab

Innovative BGA Defect Detection Method for Transient Discontinuity
Innovative BGA Defect Detection Method for Transient Discontinuity
This paper summarized the development of this innovative in-situ, real time methodology, which is capable of detecting BGA transient discontinuity.
Analysis Lab

Novel Approaches for Minimizing Pad Cratering
Novel Approaches for Minimizing Pad Cratering
Pad cratering is laminate fracturing under the copper pads of a surface mount component. Two novel approaches to minimize pad cratering are presented.
Production Floor

Can High Particle Concentrations Impact PCB Assembly?
Can High Particle Concentrations Impact PCB Assembly?
At our SMT facility we currently control ambient temperature, relative humidity and particle count. Is particle count a good parameter to control? How can having high particle concentration affect our PCB assembly process, printing process, reflow, etc.?
Board Talk

Process Control of Ionic Contamination in Assembly of Electronic Circuits
Process Control of Ionic Contamination in Assembly of Electronic Circuits
This paper reviews a testing protocol based on IPC-TM 650 2.3.25 to enable monitoring of ionic contamination within series production.
Analysis Lab

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