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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Printed Circuit Board Fabrication Processes and Their Effects on Fine Copper Barrel Cracks
The onset of copper barrel cracks is typically induced by the presence of manufacturing defects. In the absence of discernible manufacturing defects,the causes of copper barrel cracks in printe
.. read more
Evaluation of Laminates in Pb-free HASL Process and Pb-free Assembly Environment
An evaluation of four FR4 laminates in commonly used stack-ups was done to determine their survivability for the Pb-free HASL process followed by a worst case Pb-free manufacturing environment
.. read more
Results of Fabrication DOE for DuPont Pyralux TK®,A Low Dielectric,Thin Flexible Circuit Material
From the first time we heard of new thin,low Dk,flex laminate material from DuPont we were excited. The material is what is now known,and commercially available,as DuPont’s Pyralux TK®. Working
.. read more
Creep Corrosion of OSP and ImAg PWB Finishes
With increasing adoption of lead-free PWB surface finishes,along with increasing product deployments in more corrosive
environments,the electronics industry is observing increased occurrences o
.. read more
The Impact of Converting Flex Circuits From HASL to a RoHS Compliant Surface Finishes
This paper will explore the most common alternatives to hot air-leveled solder (HASL) as a finish for flex circuits and some of the issues one may want to be aware of when converting. Whether t
.. read more
Long Term Reliability Analysis of Lead Free and Halogen Free Electronic Assemblies
The New England Lead Free Consortium,composed of many companies in the electronic supply chain in the regional area and chaired by the author; has embarked on an extensive long term reliability
.. read more
Comparative Assessment of Electrochemical Migration on Printed Circuit Boards with Lead-Free and Tin-Lead Solders
Current leakage on a printed circuit board (PCB) can occur due to a reduction in surface insulation resistance (SIR) between adjacent conductors. This is frequently caused by electrochemical mi
.. read more
Broadband Printing: The New SMT Challenge
The Surface Mount Technology (SMT) industry has overcome many challenges in the last 30 years,since its introduction in the 1980’s. One recent challenge has been the lead-free assembly. People
.. read more
Hot Air Solder Leveling in the Lead-free Era
Although the advantages of Hot Air Solder Leveling (HASL) in providing the most robust solderable finish for printed circuit boards are well recognized,in the years leading up to the implementa
.. read more
Corrosion Resistance of PWB Final Finishes
As the electronic industry is moving to lead-free PWB final finishes and high density circuit boards,the widely used PWB finish,SnPb HASL,has to be replaced with a lead-free and coplanar PWB fi
.. read more
The Fluidity of the Ni-Modified Sn-Cu Eutectic Lead Free Solder
One of the factors that has contributed to the establishment of the Ni-modified Sn-Cu eutectic as one of the major alternatives
to the widely promoted Sn-Ag-Cu alloys as an RoHS compliant lead-
.. read more
PCB Materials Behaviours towards Humidity and Impact of the Design,Finishes,Baking and Assembly Processes on Assembly Quality and Solder Joint Reliability
As Electrostatic discharge,humidity can have a bad impact on assembly quality. It requires environmental conditions and
process controls but also risks knowledge. To overcome humidity issue,par
.. read more
Solderability of Sn/Cu Lead-Free Solder as a HASL Bare Board Final Finish
Sn/Cu lead-free solder is a good alternative to 63/37 solder for use in HASL processes. Solderability of Sn/Cu
surface exceeds that of 63/37 solder,nickel-gold,OSP,silver,and immersion tin both
.. read more
What’s Wrong With My Surface Finish? An Evaluation of the Limitations of Common Surface Finishes
This paper will highlight the shortcomings of each of the commonly used surface finishes available on the market
today. The goal is to spark the industry interest,that it may double its efforts
.. read more
Board Finish Solderability with Sn-Ag-Cu
Lead-free soldering technology is still in its infancy with technical and cost issues posing major challenges for the
industry. It is expected that soldering in a nitrogen atmosphere might over
.. read more
Next Generation Pb-free Immersion Finishes,Methodologies used to Determine Coating Thickness and the Impact of Thickness Variations and Rework on Soldering
The next generation of surface finish coatings to replace HASL are now being installed by various PWB manufacturers and have been implemented by many OEMs. Coating thickness requirements are p
.. read more
Printed Circuit Board Fabrication Processes and Their Effects on Fine Copper Barrel Cracks
The onset of copper barrel cracks is typically induced by the presence of manufacturing defects. In the absence of discernible manufacturing defects,the causes of copper barrel cracks in printe
.. read more
Evaluation of Laminates in Pb-free HASL Process and Pb-free Assembly Environment
An evaluation of four FR4 laminates in commonly used stack-ups was done to determine their survivability for the Pb-free HASL process followed by a worst case Pb-free manufacturing environment
.. read more
Results of Fabrication DOE for DuPont Pyralux TK®,A Low Dielectric,Thin Flexible Circuit Material
From the first time we heard of new thin,low Dk,flex laminate material from DuPont we were excited. The material is what is now known,and commercially available,as DuPont’s Pyralux TK®. Working
.. read more
Creep Corrosion of OSP and ImAg PWB Finishes
With increasing adoption of lead-free PWB surface finishes,along with increasing product deployments in more corrosive
environments,the electronics industry is observing increased occurrences o
.. read more
The Impact of Converting Flex Circuits From HASL to a RoHS Compliant Surface Finishes
This paper will explore the most common alternatives to hot air-leveled solder (HASL) as a finish for flex circuits and some of the issues one may want to be aware of when converting. Whether t
.. read more
Long Term Reliability Analysis of Lead Free and Halogen Free Electronic Assemblies
The New England Lead Free Consortium,composed of many companies in the electronic supply chain in the regional area and chaired by the author; has embarked on an extensive long term reliability
.. read more
Comparative Assessment of Electrochemical Migration on Printed Circuit Boards with Lead-Free and Tin-Lead Solders
Current leakage on a printed circuit board (PCB) can occur due to a reduction in surface insulation resistance (SIR) between adjacent conductors. This is frequently caused by electrochemical mi
.. read more
Broadband Printing: The New SMT Challenge
The Surface Mount Technology (SMT) industry has overcome many challenges in the last 30 years,since its introduction in the 1980’s. One recent challenge has been the lead-free assembly. People
.. read more
Hot Air Solder Leveling in the Lead-free Era
Although the advantages of Hot Air Solder Leveling (HASL) in providing the most robust solderable finish for printed circuit boards are well recognized,in the years leading up to the implementa
.. read more
Corrosion Resistance of PWB Final Finishes
As the electronic industry is moving to lead-free PWB final finishes and high density circuit boards,the widely used PWB finish,SnPb HASL,has to be replaced with a lead-free and coplanar PWB fi
.. read more
The Fluidity of the Ni-Modified Sn-Cu Eutectic Lead Free Solder
One of the factors that has contributed to the establishment of the Ni-modified Sn-Cu eutectic as one of the major alternatives
to the widely promoted Sn-Ag-Cu alloys as an RoHS compliant lead-
.. read more
PCB Materials Behaviours towards Humidity and Impact of the Design,Finishes,Baking and Assembly Processes on Assembly Quality and Solder Joint Reliability
As Electrostatic discharge,humidity can have a bad impact on assembly quality. It requires environmental conditions and
process controls but also risks knowledge. To overcome humidity issue,par
.. read more
Solderability of Sn/Cu Lead-Free Solder as a HASL Bare Board Final Finish
Sn/Cu lead-free solder is a good alternative to 63/37 solder for use in HASL processes. Solderability of Sn/Cu
surface exceeds that of 63/37 solder,nickel-gold,OSP,silver,and immersion tin both
.. read more
What’s Wrong With My Surface Finish? An Evaluation of the Limitations of Common Surface Finishes
This paper will highlight the shortcomings of each of the commonly used surface finishes available on the market
today. The goal is to spark the industry interest,that it may double its efforts
.. read more
Board Finish Solderability with Sn-Ag-Cu
Lead-free soldering technology is still in its infancy with technical and cost issues posing major challenges for the
industry. It is expected that soldering in a nitrogen atmosphere might over
.. read more
Next Generation Pb-free Immersion Finishes,Methodologies used to Determine Coating Thickness and the Impact of Thickness Variations and Rework on Soldering
The next generation of surface finish coatings to replace HASL are now being installed by various PWB manufacturers and have been implemented by many OEMs. Coating thickness requirements are p
.. read more