Knowledge Hub
Your Gateway to Technical Knowledge Exchange for the Global Electronics Community
Explore our database of industry knowledge that fuels innovation, learning, and professional growth. Knowledge Hub is a collection of conference technical papers, webinars, presentations, on-demand video and more. You can search by author, title, keyword and type of content. You can also search for keywords and topics in the Tag field. Access to Knowledge Hub is reserved for members.
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Cleanliness Assessment for Class III Lead-Free No-Clean Assemblies
For mission critical electronics or Class III products,such as those used within the military,aerospace and medical industries,highest electronic reliability is a requirement as failure is not
.. read more
VOC-free Flux Study Not All WOA (Weak Organic Acids) Are the Same
In an effort to reduce volatile organic compound (VOC) emissions within our environment,policymakers
have encouraged and/or mandated that electronics manufacturers change from alcohol-based VOC
.. read more
Cleaning in an HDI World
For many years there has been a huge disconnect between the engineers that design the assembly and the chemists responsible for developing the assembly materials. In short,engineers and chemist
.. read more
An Evaluation of the Insulation Resistance and Surface Contamination of Printed Circuit Board Assemblies
The overall effectiveness of 20 circuit board assembly processes,made up of 4 solder/flux combinations and 6 cleaning processes was investigated by using in-situ surface insulation resistance m
.. read more
Correlation of Sir,Halide/Halogen,and Copper Mirror Tests
With the advent of RoHS and WEEE and the concern of some companies to eliminate halogen-containing compounds from their products,it is vital to have an understanding of halogen compounds and ho
.. read more
Cleanliness Comparison – C3 Localized Versus Total Board Extractions
In this evaluation we will show an ionic residue comparison using Umpire 2 boards that were top and bottom surface mounted with standard reflow and selective wave soldered on the connector and
.. read more
A Review of Halogen/Halide-Free Test Methods and Classifications for Soldering Materials in the Electronics Industry
Over the last few years,there has been an increase in the Evaluation and use of halogen-free soldering materials. In addition,
there has been increased scrutiny into the level of halogens and r
.. read more
An Investigation into Hand Sanitizers and Hand Lotions and Potential Risks to High Performance Electronics
As people become more concerned about the global outbreaks of various strains of influenza,more precautions are being taken with respect to personal hygiene. A common precaution involves the us
.. read more
Understanding Cleanliness and Methods of Determination
Several methods exist to determine cleanliness of printed wiring assemblies. This presentation will describe the common methods used for determining cleanliness of printed wiring assemblies. Th
.. read more
Challenges toward Implementing a Halogen-Free PCB Assembly Process
The electronics industry continues to strive to provide more environmentally friendly products. This movement is partly due to legislation from various countries,partly due to public outcry fro
.. read more
Investigation of Process Feasibility / Compatibility and Solder Joint Reliability of Tin-Lead Dippable Solder Paste Ball Grid Array (BGA) Component...
This paper is an examination of the process feasibility,solder joint reliability,and materials/process compatibility of a dippable solder paste material for an area array component rework/repai
.. read more
Effects of Solder Mask on Electrochemical Migration of Tin-Lead and Lead-Free Boards
Electrochemical migration (ECM) is the growth of conductive metal filaments on a printed circuit board (PCB) through an electrolyte solution under a DC voltage bias. ECM can cause a reduction i
.. read more
An Investigation into Hand Sanitizers and Hand Lotions and Potential Risks to High Performance Electronics
As people become more concerned about the global outbreaks of various strains of influenza,more precautions are being taken with respect to personal hygiene. A common precaution involves the us
.. read more
Relationship Between Via Size and Cleanliness
Microvia technology has many advantages: it requires a smaller designed area,which saves the board size and weight,using less space,allowing for a smaller PCB,which can results in lower costs,a
.. read more
Round Robin Testing in Support of IPC J-STD-709: Combustion Sample Preparation Methods for Ion Chromatography Analysis of Br and Cl
This paper will present the results of a round robin study of sample combustion followed by ion chromatography (CIC) to measure the concentration of bromine and chlorine in electronic materials
.. read more
“Metal Whiskers” Does Surface Contamination Have an Effect of Whisker Formation?
Foresite has investigated many whisker failures and found that consistent high levels of chloride,sulfate and amines are present in and around the areas of whisker formation even in hot dry env
.. read more
Pockets of Contamination That Are Causing Field Failures and How to Avoid Them
The areas of entrapment on cleaned and no-clean assemblies are showing higher levels of contamination around BGA’s,in microvias and particularly under components like the QFN. Flux residues tra
.. read more
Challenges toward Implementing a Halogen-Free PCB Assembly Process
The electronics industry continues to strive to provide more environmentally friendly products. This movement is partly due
to legislation from various countries,partly due to public outcry fro
.. read more
Cleaning Qualification Methodology for Inline Aqueous Assembly Process
An assessment to measure the cleanliness of the area underneath a component has been completed. The assessment uses an 8”×9”×0.093” test vehicle with FR4 laminate,OSP surface finishing,and 21 p
.. read more
Ionic Analysis of Common Beverages Spilled on Electronics
Electronics,especially mobile electronic items,are subjected to unintentional abuse by having various beverages spilled onto or into them. Ion Chromatography and emission spectroscopy were used
.. read more
Methods for Choosing a Saponifier or Surfactant for Printed Circuit Board and Stencil Cleaning Applications
This paper will discuss the technical challenges associated with the selection of chemical additive for the printed circuit board assembly (PCBA) and stencil cleaning processes. The removal of
.. read more
Ionic Analysis of Common Beverages Spilled on Electronics
Electronics,especially mobile electronic items,are subjected to unintentional abuse by having various beverages spilled onto or into them. Ion Chromatography and emission spectroscopy were used
.. read more
Describing Key Coating and Process Characteristics of a Pb-Free OSP Process
Organic Solderability Preservatives (OSP) continue to attract significant attention as circuit board final finishes. They have evolved from simple and thin benzotriazole coatings to thicker and
.. read more
Cleanliness Assessment for Class III Lead-Free No-Clean Assemblies
For mission critical electronics or Class III products,such as those used within the military,aerospace and medical industries,highest electronic reliability is a requirement as failure is not
.. read more
VOC-free Flux Study Not All WOA (Weak Organic Acids) Are the Same
In an effort to reduce volatile organic compound (VOC) emissions within our environment,policymakers
have encouraged and/or mandated that electronics manufacturers change from alcohol-based VOC
.. read more
Cleaning in an HDI World
For many years there has been a huge disconnect between the engineers that design the assembly and the chemists responsible for developing the assembly materials. In short,engineers and chemist
.. read more
An Evaluation of the Insulation Resistance and Surface Contamination of Printed Circuit Board Assemblies
The overall effectiveness of 20 circuit board assembly processes,made up of 4 solder/flux combinations and 6 cleaning processes was investigated by using in-situ surface insulation resistance m
.. read more
Correlation of Sir,Halide/Halogen,and Copper Mirror Tests
With the advent of RoHS and WEEE and the concern of some companies to eliminate halogen-containing compounds from their products,it is vital to have an understanding of halogen compounds and ho
.. read more
Cleanliness Comparison – C3 Localized Versus Total Board Extractions
In this evaluation we will show an ionic residue comparison using Umpire 2 boards that were top and bottom surface mounted with standard reflow and selective wave soldered on the connector and
.. read more
A Review of Halogen/Halide-Free Test Methods and Classifications for Soldering Materials in the Electronics Industry
Over the last few years,there has been an increase in the Evaluation and use of halogen-free soldering materials. In addition,
there has been increased scrutiny into the level of halogens and r
.. read more
An Investigation into Hand Sanitizers and Hand Lotions and Potential Risks to High Performance Electronics
As people become more concerned about the global outbreaks of various strains of influenza,more precautions are being taken with respect to personal hygiene. A common precaution involves the us
.. read more
Understanding Cleanliness and Methods of Determination
Several methods exist to determine cleanliness of printed wiring assemblies. This presentation will describe the common methods used for determining cleanliness of printed wiring assemblies. Th
.. read more
Challenges toward Implementing a Halogen-Free PCB Assembly Process
The electronics industry continues to strive to provide more environmentally friendly products. This movement is partly due to legislation from various countries,partly due to public outcry fro
.. read more
Investigation of Process Feasibility / Compatibility and Solder Joint Reliability of Tin-Lead Dippable Solder Paste Ball Grid Array (BGA) Component...
This paper is an examination of the process feasibility,solder joint reliability,and materials/process compatibility of a dippable solder paste material for an area array component rework/repai
.. read more
Effects of Solder Mask on Electrochemical Migration of Tin-Lead and Lead-Free Boards
Electrochemical migration (ECM) is the growth of conductive metal filaments on a printed circuit board (PCB) through an electrolyte solution under a DC voltage bias. ECM can cause a reduction i
.. read more
An Investigation into Hand Sanitizers and Hand Lotions and Potential Risks to High Performance Electronics
As people become more concerned about the global outbreaks of various strains of influenza,more precautions are being taken with respect to personal hygiene. A common precaution involves the us
.. read more
Relationship Between Via Size and Cleanliness
Microvia technology has many advantages: it requires a smaller designed area,which saves the board size and weight,using less space,allowing for a smaller PCB,which can results in lower costs,a
.. read more
Round Robin Testing in Support of IPC J-STD-709: Combustion Sample Preparation Methods for Ion Chromatography Analysis of Br and Cl
This paper will present the results of a round robin study of sample combustion followed by ion chromatography (CIC) to measure the concentration of bromine and chlorine in electronic materials
.. read more
“Metal Whiskers” Does Surface Contamination Have an Effect of Whisker Formation?
Foresite has investigated many whisker failures and found that consistent high levels of chloride,sulfate and amines are present in and around the areas of whisker formation even in hot dry env
.. read more
Pockets of Contamination That Are Causing Field Failures and How to Avoid Them
The areas of entrapment on cleaned and no-clean assemblies are showing higher levels of contamination around BGA’s,in microvias and particularly under components like the QFN. Flux residues tra
.. read more
Challenges toward Implementing a Halogen-Free PCB Assembly Process
The electronics industry continues to strive to provide more environmentally friendly products. This movement is partly due
to legislation from various countries,partly due to public outcry fro
.. read more
Cleaning Qualification Methodology for Inline Aqueous Assembly Process
An assessment to measure the cleanliness of the area underneath a component has been completed. The assessment uses an 8”×9”×0.093” test vehicle with FR4 laminate,OSP surface finishing,and 21 p
.. read more
Ionic Analysis of Common Beverages Spilled on Electronics
Electronics,especially mobile electronic items,are subjected to unintentional abuse by having various beverages spilled onto or into them. Ion Chromatography and emission spectroscopy were used
.. read more
Methods for Choosing a Saponifier or Surfactant for Printed Circuit Board and Stencil Cleaning Applications
This paper will discuss the technical challenges associated with the selection of chemical additive for the printed circuit board assembly (PCBA) and stencil cleaning processes. The removal of
.. read more
Ionic Analysis of Common Beverages Spilled on Electronics
Electronics,especially mobile electronic items,are subjected to unintentional abuse by having various beverages spilled onto or into them. Ion Chromatography and emission spectroscopy were used
.. read more
Describing Key Coating and Process Characteristics of a Pb-Free OSP Process
Organic Solderability Preservatives (OSP) continue to attract significant attention as circuit board final finishes. They have evolved from simple and thin benzotriazole coatings to thicker and
.. read more