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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Cure Temperature Impact on Silicone Properties
Most dispensable thermosetting products are supplied as blends of monomers or pre-polymers. Curing involves a complicated chemical “dance” with a precise sequence of polymerization of one or
.. read more
Manufacturability and Reliability Screening of Lower Melting Point Pb-Free Alloys Containing Bi
This paper is the first of two papers discussing the Celestica/Honeywell Lower Melt Alloy program. The program explores the manufacturability and reliability for Pb-freethree Bi-containing allo
.. read more
Low Temperature SMT Process Implementation
Low Temperature Conversion
•Substantial cost savings over regular processes
•Savings can outweigh paste cost differences
•Can be mechanically stronger if done right
•Involves more than just cha
.. read more
New Developments in PCB Laminates
Executive Summary
There are many issues to consider when developing a new circuit material for the PCB industry. It is a given assumption that the new material must be compatible to standard PC
.. read more
Polyphenylene Ether Macromonomers. XI. Use in Non-Epoxy Printed Wiring Boards
The continuous progression toward portable,high frequency microelectronic systems has placed high demands on material
performance,notably low dielectric constants (Dk),low loss tangent (Df),low
.. read more
iNEMI HFR-Free PCB Materials Team Project: An Investigation to Identify Technology Limitations Involved in Transitioning to HFR-Free PCB Materials
In response to a growing concern within the Electronic Industry to the transition to Halogen-Free laminates (HFR-Free)
within the Client Market space (Desktop and Notebook computers) iNEMI init
.. read more
An Investigation into the Predictability of PCB Coplanarity for Room vs. Lead Free Assembly Temperatures
With the advent of larger packages and higher densities/pitch the Industry has been concerned with the co -planarity of both
the substrate package and the PCB motherboard. The iNEMI PCB Co-Plan
.. read more
An Innovative High CTI RCC Material
Consumption electronic devices are becoming much smaller,lighter and multifunctional,and high CTI application has
already been not satisfied with double sided design and requested thinner & mul
.. read more
New Developments in PCB Laminates
There are few halogen free flame retardant laminates available and for those on the market currently,they are not considered mid loss and thermally stable. Theta circuit materials appear to be
.. read more
Understanding when to use FR-4 laminates or High Frequency Laminates
Over the years a question that has been asked repeatedly of material suppliers is: “when do I need to use a high frequency laminate over the choice of a standard FR-4 substrate”? The answer has
.. read more
Reliability Testing of PWB Plated through Holes in Air-to-Air Thermal Cycling and Interconnect Stress Testing after Pb-free Reflow Preconditioning
The High Density Packaging Users Group Consortium investigated plated through hole reliability of printed wiring board test vehicles constructed with 20 different Pb-free capable printed wiring
.. read more
Polyphenylene Ether Macromonomer. Viii. Low Z-Axis Cte,Low Df Epoxy Laminates
Properties of printed circuit board laminates are a function of the type and levels of its components. Endeavors to a balance various performance criteria involve balancing the types and amount
.. read more
A Combination Flame Retardant Curing Agent Material For Non-Halogen PCB Laminates
As interest continues in the development of non-halogen flame retardants for printed circuit boards,the requirements for robust thermal stability and lead-free solder compatibility also continu
.. read more
Toughened Laminates for Printed Circuit Boards: Correlation of Drillability to Material Properties
With the miniaturization of electronic devices1,the need for more versatile materials to make these devices increases. Coupled with the gradual removal of lead-based solders2,thermal stability
.. read more
Impact of Moisture Content on Printed Circuit Board Laminate Thermal Properties
Moisture plays an important role in the integrity and reliability of printed circuit boards (PCBs). The presence of moisture in a PCB alters its thermo-mechanical properties,induces hygroscopic
.. read more
A Novel Halogen-Free Material for High Speed PCB
The mobile communication devices such as cell phones require high speed transmission of large volume data as well as reduction in size and weight. When signal is transmitted in high speed and f
.. read more
Polyphenylene Ether Macromolecules. VI. Halogen Free Flame Retardant Epoxy Resins
An important criterion for dielectric materials used in the microelectronics industry is their flammability. Typically,flame
retardant epoxy resins use bromine-containing flame-retardants. In t
.. read more
Water Vapor Uptake and Release in Printed Boards
Excessive moisture entrapped/absorbed within printed board laminates can expand during soldering operations,causing delamination or other damage. While moisture absorption data is available for
.. read more
Polyphenylene Ether Macromonomers. Iii. Enhancement of Dielectric Materials
Two major trends in printed wiring boards electronics are applications that require higher operating frequency,often in the radio frequency range (GHz),and the use of lead free solder assembly.
.. read more
Effect of Lead-free Soldering on Key Material Properties of FR-4 Printed Circuit Board Laminates
The high temperature exposures associated with lead-free soldering of printed circuit boards (PCBs) can alter the laminate
material properties thereby creating a shift in the performance and re
.. read more
Thermal Residue Fingerprinting: A Revolutionary Approach to Develop a Selective Cleaning Solution
During the last 5 years,the processes to remove flux residues especially for lead-free and challenging geometries have demonstrated new cleaning obstacles which have to be overcome.i A new meth
.. read more
Novel Low Dk/Df Materials for High Speed PWB
The mobile communication devices such as cell phones require high speed transmission of large volume data as well as reduction in size and weight. When signal is transmitted in high speed and f
.. read more
Application Research of Snap Curing CSP Underfill
CSP underfill commonly acts to protect solder bumps of fine pitch CSP and enhances the reliability. This paper presents four snap curing underfills (=2min@150?or=5min@120?),tested on SnPb assem
.. read more
LOWERING LAYERS w/HDI for RoHS ROBUSTNESS
A perplexing challenge for RoHS compliance is adapting large,complex and thick,high-layer count multilayers to lead-free assembly. These are typically dense,complex assemblies with large BGAs a
.. read more
Lead Free Assembly Impacts on Laminate Material Properties and “Pad Crater” Failures
Printed circuit board (PCB) feature sizes are decreasing to support increasing density thrusts for electronic products and packaging. The transition to lead-free products has changed the stress
.. read more
Comparative Study of Phosphorus-based Flame Retardants in Halogen-Free Laminates
This paper compares performance of two phosphorus-based flame retardants: poly-(m-phenylene methyl phosphonate) (PPMP) recently introduced to the market and 9,10-dihydro-9-oxa-10-phosphenanthre
.. read more
New Methods to Efficiently Test the Reliability of Plated Vias and to Model Plated Via Life from Laminate Material Data
This paper continues work by Sun Microsystems and the University of Maryland,CALCE[1] to predict plated through via life using laminate material properties,plated copper material properties,and
.. read more
New Methods to Efficiently Test the Reliability of Plated Vias and to Model Plated Via Life from Laminate Material Data
This paper continues work by Sun Microsystems and the University of Maryland,CALCE[1] to predict plated through via life using laminate material properties,plated copper material properties,and
.. read more
Cure Temperature Impact on Silicone Properties
Most dispensable thermosetting products are supplied as blends of monomers or pre-polymers. Curing involves a complicated chemical “dance” with a precise sequence of polymerization of one or
.. read more
Manufacturability and Reliability Screening of Lower Melting Point Pb-Free Alloys Containing Bi
This paper is the first of two papers discussing the Celestica/Honeywell Lower Melt Alloy program. The program explores the manufacturability and reliability for Pb-freethree Bi-containing allo
.. read more
Low Temperature SMT Process Implementation
Low Temperature Conversion
•Substantial cost savings over regular processes
•Savings can outweigh paste cost differences
•Can be mechanically stronger if done right
•Involves more than just cha
.. read more
New Developments in PCB Laminates
Executive Summary
There are many issues to consider when developing a new circuit material for the PCB industry. It is a given assumption that the new material must be compatible to standard PC
.. read more
Polyphenylene Ether Macromonomers. XI. Use in Non-Epoxy Printed Wiring Boards
The continuous progression toward portable,high frequency microelectronic systems has placed high demands on material
performance,notably low dielectric constants (Dk),low loss tangent (Df),low
.. read more
iNEMI HFR-Free PCB Materials Team Project: An Investigation to Identify Technology Limitations Involved in Transitioning to HFR-Free PCB Materials
In response to a growing concern within the Electronic Industry to the transition to Halogen-Free laminates (HFR-Free)
within the Client Market space (Desktop and Notebook computers) iNEMI init
.. read more
An Investigation into the Predictability of PCB Coplanarity for Room vs. Lead Free Assembly Temperatures
With the advent of larger packages and higher densities/pitch the Industry has been concerned with the co -planarity of both
the substrate package and the PCB motherboard. The iNEMI PCB Co-Plan
.. read more
An Innovative High CTI RCC Material
Consumption electronic devices are becoming much smaller,lighter and multifunctional,and high CTI application has
already been not satisfied with double sided design and requested thinner & mul
.. read more
New Developments in PCB Laminates
There are few halogen free flame retardant laminates available and for those on the market currently,they are not considered mid loss and thermally stable. Theta circuit materials appear to be
.. read more
Understanding when to use FR-4 laminates or High Frequency Laminates
Over the years a question that has been asked repeatedly of material suppliers is: “when do I need to use a high frequency laminate over the choice of a standard FR-4 substrate”? The answer has
.. read more
Reliability Testing of PWB Plated through Holes in Air-to-Air Thermal Cycling and Interconnect Stress Testing after Pb-free Reflow Preconditioning
The High Density Packaging Users Group Consortium investigated plated through hole reliability of printed wiring board test vehicles constructed with 20 different Pb-free capable printed wiring
.. read more
Polyphenylene Ether Macromonomer. Viii. Low Z-Axis Cte,Low Df Epoxy Laminates
Properties of printed circuit board laminates are a function of the type and levels of its components. Endeavors to a balance various performance criteria involve balancing the types and amount
.. read more
A Combination Flame Retardant Curing Agent Material For Non-Halogen PCB Laminates
As interest continues in the development of non-halogen flame retardants for printed circuit boards,the requirements for robust thermal stability and lead-free solder compatibility also continu
.. read more
Toughened Laminates for Printed Circuit Boards: Correlation of Drillability to Material Properties
With the miniaturization of electronic devices1,the need for more versatile materials to make these devices increases. Coupled with the gradual removal of lead-based solders2,thermal stability
.. read more
Impact of Moisture Content on Printed Circuit Board Laminate Thermal Properties
Moisture plays an important role in the integrity and reliability of printed circuit boards (PCBs). The presence of moisture in a PCB alters its thermo-mechanical properties,induces hygroscopic
.. read more
A Novel Halogen-Free Material for High Speed PCB
The mobile communication devices such as cell phones require high speed transmission of large volume data as well as reduction in size and weight. When signal is transmitted in high speed and f
.. read more
Polyphenylene Ether Macromolecules. VI. Halogen Free Flame Retardant Epoxy Resins
An important criterion for dielectric materials used in the microelectronics industry is their flammability. Typically,flame
retardant epoxy resins use bromine-containing flame-retardants. In t
.. read more
Water Vapor Uptake and Release in Printed Boards
Excessive moisture entrapped/absorbed within printed board laminates can expand during soldering operations,causing delamination or other damage. While moisture absorption data is available for
.. read more
Polyphenylene Ether Macromonomers. Iii. Enhancement of Dielectric Materials
Two major trends in printed wiring boards electronics are applications that require higher operating frequency,often in the radio frequency range (GHz),and the use of lead free solder assembly.
.. read more
Effect of Lead-free Soldering on Key Material Properties of FR-4 Printed Circuit Board Laminates
The high temperature exposures associated with lead-free soldering of printed circuit boards (PCBs) can alter the laminate
material properties thereby creating a shift in the performance and re
.. read more
Thermal Residue Fingerprinting: A Revolutionary Approach to Develop a Selective Cleaning Solution
During the last 5 years,the processes to remove flux residues especially for lead-free and challenging geometries have demonstrated new cleaning obstacles which have to be overcome.i A new meth
.. read more
Novel Low Dk/Df Materials for High Speed PWB
The mobile communication devices such as cell phones require high speed transmission of large volume data as well as reduction in size and weight. When signal is transmitted in high speed and f
.. read more
Application Research of Snap Curing CSP Underfill
CSP underfill commonly acts to protect solder bumps of fine pitch CSP and enhances the reliability. This paper presents four snap curing underfills (=2min@150?or=5min@120?),tested on SnPb assem
.. read more
LOWERING LAYERS w/HDI for RoHS ROBUSTNESS
A perplexing challenge for RoHS compliance is adapting large,complex and thick,high-layer count multilayers to lead-free assembly. These are typically dense,complex assemblies with large BGAs a
.. read more
Lead Free Assembly Impacts on Laminate Material Properties and “Pad Crater” Failures
Printed circuit board (PCB) feature sizes are decreasing to support increasing density thrusts for electronic products and packaging. The transition to lead-free products has changed the stress
.. read more
Comparative Study of Phosphorus-based Flame Retardants in Halogen-Free Laminates
This paper compares performance of two phosphorus-based flame retardants: poly-(m-phenylene methyl phosphonate) (PPMP) recently introduced to the market and 9,10-dihydro-9-oxa-10-phosphenanthre
.. read more
New Methods to Efficiently Test the Reliability of Plated Vias and to Model Plated Via Life from Laminate Material Data
This paper continues work by Sun Microsystems and the University of Maryland,CALCE[1] to predict plated through via life using laminate material properties,plated copper material properties,and
.. read more
New Methods to Efficiently Test the Reliability of Plated Vias and to Model Plated Via Life from Laminate Material Data
This paper continues work by Sun Microsystems and the University of Maryland,CALCE[1] to predict plated through via life using laminate material properties,plated copper material properties,and
.. read more