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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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
Stencil Options for Printing Solder Paste for .3 Mm CSP’s and 01005 Chip Components
Printing solder paste for very small components like .3mm pitch CSP’s and 01005 Chip Components is a challenge for the printing process when other larger components like RF shields,SMT Connecto
.. read more
Effect of Squeegee Blade on Solder Paste Print Quality
The solder paste deposition process is viewed by many in the industry as the leading contributor of defects in the Surface Mount Technology (SMT) assembly process. As with all manufacturing pro
.. read more
Stencil Printing Transfer Efficiency of Circular vs. Square Apertures with the Same Solder Paste Volume
It is frequently noted in surface mount printed circuit board assembly that most solder defects can be traced back to the stencil printing process. In addition,continuous miniaturization trends
.. read more
Drop Test Performance of A Medium Complexity Lead-Free Board After Assembly and Rework
The mechanical behavior of printed circuit assemblies (PCA) at high strain rates is very important for the reliability of products used in harsh environments. The transition to Pb-free material
.. read more
Pad Cratering Evaluation of PCB
Pad cratering in the PCB is a new failure mode encountered in electronic assemblies,particularly in lead-free products. The
failure mechanisms and root causes are not yet fully understood,and l
.. read more
Effect of Environmental Stress and Bias Conditions on Reliability of Embedded Planar Capacitors
The reliability of an embedded planar capacitor laminate under a variety of environmental stress and bias conditions was investigated. The dielectric consisted of a composite of BaTiO3 particle
.. read more
Basic PCB Level Assembly Process Methodology for 3D Package-on-Package
The motivation for developing higher density IC packaging continues to be the market and the consumers’ expectation that
each new generation of products furnish greater functionality. The minia
.. read more
Throughput vs. Wet-Out Area Study for Package on Package (PoP) Underfill Dispensing
Package on Package (PoP) has become a relatively common component being used in mobile electronics as it allows for saving space in the board layout due to the 3D package layout. To insure devi
.. read more
Reliability Evaluation of One-Pass and Two-Pass Techniques of Assembly for Package on Packages under Torsion Loads
Package on Packages (PoP) find use in applications that require high performance with increased memory density. One of the
greatest benefits of PoP technology is the elimination of the expensiv
.. read more
Progress in Developing Industry Standard Test Requirements for Pb-Free Solder Alloys
Recently,the industry has seen the development of a wide range of new Pb-free alloys. A significant element of uncertainty within the industry regarding these new alloys is the lack of defined
.. read more
Characterizing the Lead-Free Impact on PCB Pad Craters
Pad cratering in Printed Circuit Boards (PCBs) is typically associated with lead-free products. This paper addresses laminate materials and the failures associated with the higher Pb-Free reflo
.. read more
Challenges in Reflow Profiling Large and High Density Ball Grid Array (BGA) Packages Using Backward Compatible Assembly Processes
Backward Compatibility of Pb free SnAgCu (SAC) solders with conventional SnPb soldering has been a subject of considerable interest since the introduction of Pb free solders earlier in this dec
.. read more
Solder Creep-Fatigue Model Parameters for SAC & Snag Lead-Free Solder Joint Reliability Estimation
For many of the Pb-free solders required under the European RoHS directive,there is now sufficient information,primarily in the form of the results of accelerated thermal cycling of various lev
.. read more
Constitutive and Failure Behavior of SnAgCu Solder Joints
Constitutive and failure descriptions of SnAgCu solder alloys are of great interest at the present. Commonly,constitutive models that have been successfully used in the past for Sn-Pb solders a
.. read more
Filling in the Gaps in Lead-Free Reliability Modeling and Testing
This presentation discusses critical material properties and test data that are often overlooked in the introduction of new lead-free solder alloys,but are critical to alloy comparison and the
.. read more
Suspect / Counterfeit Electronic Components and Risk Mitigation
In this presentation,numerous examples of counterfeited parts are provided along with the means of identification for the respective technique utilized in production.
.. 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
Design Considerations for High Reliability PCB
- History & Importance of PCB - Environmental Initiatives - Reliability Consideration With High Temp Processing - Reliability Considerations for Materials to withstand Lead-Free Assembly
.. read more
Pb-Free Reflow,PCB Degradation,and the Influence of Moisture Absorption
Cracking and delamination defects in printed circuit boards (PCBs) during elevated thermal exposure have always been a concern for the electronics industry. However,with the increasing spread o
.. read more
Proposed Standardizations of Lead Free Alloy Testing
Although lead free assembly is now widely adopted the industry is still exploring a variety of options for lead free alloys. Attempts to standardize on a single alloy for either reflow or wave
.. read more
IPC Solder Products Value Council (SPVC) Lead-Free Technical Subcommittee Report: Take Action Limits (TAL) for SAC305 Lead Free Automated Soldering...
At present there are a large number of materials that have been proposed as replacements for lead containing solder for reflow and wave and selective soldering.
Unlike solder paste in a reflow
.. read more
Vibration and Mechanical Shock Testing
Little data has been generated on the performance of lead-free solders under vibration and mechanical shock. What data exists suggests that lead-free solders may be less reliable than eutectic
.. read more
Implementing Quality and Reliability on the Assembly Line
Many will look to IPC standards for advice or workmanship requirements for electronic assemblies. Some will find a copy of IPC-A-610 Acceptability of Electronic Assemblies and stop there. But I
.. read more
High Performance Work Teams in EMS The Critical Difference
This presentation attempts to convince the reader that while all the logistical,equipment,financial and process aspects of any business are important,the high performance work team is the criti
.. read more
Manufacturing Quality Issues from the EMS Perspective
As more electronic assembly moves from OEM to EMS providers,a number of key issues arise in the overall value stream of production. This presentation will provide a comprehensive look at qualit
.. read more
Microvia Reliability Failure Modes
Recent increases in assembly temperatures in response to removing lead from solder used in printed circuit boards (PCBs)
assembly has increase the strain and stress on interconnect structures.
.. 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
Stencil Options for Printing Solder Paste for .3 Mm CSP’s and 01005 Chip Components
Printing solder paste for very small components like .3mm pitch CSP’s and 01005 Chip Components is a challenge for the printing process when other larger components like RF shields,SMT Connecto
.. read more
Effect of Squeegee Blade on Solder Paste Print Quality
The solder paste deposition process is viewed by many in the industry as the leading contributor of defects in the Surface Mount Technology (SMT) assembly process. As with all manufacturing pro
.. read more
Stencil Printing Transfer Efficiency of Circular vs. Square Apertures with the Same Solder Paste Volume
It is frequently noted in surface mount printed circuit board assembly that most solder defects can be traced back to the stencil printing process. In addition,continuous miniaturization trends
.. read more
Drop Test Performance of A Medium Complexity Lead-Free Board After Assembly and Rework
The mechanical behavior of printed circuit assemblies (PCA) at high strain rates is very important for the reliability of products used in harsh environments. The transition to Pb-free material
.. read more
Pad Cratering Evaluation of PCB
Pad cratering in the PCB is a new failure mode encountered in electronic assemblies,particularly in lead-free products. The
failure mechanisms and root causes are not yet fully understood,and l
.. read more
Effect of Environmental Stress and Bias Conditions on Reliability of Embedded Planar Capacitors
The reliability of an embedded planar capacitor laminate under a variety of environmental stress and bias conditions was investigated. The dielectric consisted of a composite of BaTiO3 particle
.. read more
Basic PCB Level Assembly Process Methodology for 3D Package-on-Package
The motivation for developing higher density IC packaging continues to be the market and the consumers’ expectation that
each new generation of products furnish greater functionality. The minia
.. read more
Throughput vs. Wet-Out Area Study for Package on Package (PoP) Underfill Dispensing
Package on Package (PoP) has become a relatively common component being used in mobile electronics as it allows for saving space in the board layout due to the 3D package layout. To insure devi
.. read more
Reliability Evaluation of One-Pass and Two-Pass Techniques of Assembly for Package on Packages under Torsion Loads
Package on Packages (PoP) find use in applications that require high performance with increased memory density. One of the
greatest benefits of PoP technology is the elimination of the expensiv
.. read more
Progress in Developing Industry Standard Test Requirements for Pb-Free Solder Alloys
Recently,the industry has seen the development of a wide range of new Pb-free alloys. A significant element of uncertainty within the industry regarding these new alloys is the lack of defined
.. read more
Characterizing the Lead-Free Impact on PCB Pad Craters
Pad cratering in Printed Circuit Boards (PCBs) is typically associated with lead-free products. This paper addresses laminate materials and the failures associated with the higher Pb-Free reflo
.. read more
Challenges in Reflow Profiling Large and High Density Ball Grid Array (BGA) Packages Using Backward Compatible Assembly Processes
Backward Compatibility of Pb free SnAgCu (SAC) solders with conventional SnPb soldering has been a subject of considerable interest since the introduction of Pb free solders earlier in this dec
.. read more
Solder Creep-Fatigue Model Parameters for SAC & Snag Lead-Free Solder Joint Reliability Estimation
For many of the Pb-free solders required under the European RoHS directive,there is now sufficient information,primarily in the form of the results of accelerated thermal cycling of various lev
.. read more
Constitutive and Failure Behavior of SnAgCu Solder Joints
Constitutive and failure descriptions of SnAgCu solder alloys are of great interest at the present. Commonly,constitutive models that have been successfully used in the past for Sn-Pb solders a
.. read more
Filling in the Gaps in Lead-Free Reliability Modeling and Testing
This presentation discusses critical material properties and test data that are often overlooked in the introduction of new lead-free solder alloys,but are critical to alloy comparison and the
.. read more
Suspect / Counterfeit Electronic Components and Risk Mitigation
In this presentation,numerous examples of counterfeited parts are provided along with the means of identification for the respective technique utilized in production.
.. 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
Design Considerations for High Reliability PCB
- History & Importance of PCB - Environmental Initiatives - Reliability Consideration With High Temp Processing - Reliability Considerations for Materials to withstand Lead-Free Assembly
.. read more
Pb-Free Reflow,PCB Degradation,and the Influence of Moisture Absorption
Cracking and delamination defects in printed circuit boards (PCBs) during elevated thermal exposure have always been a concern for the electronics industry. However,with the increasing spread o
.. read more
Proposed Standardizations of Lead Free Alloy Testing
Although lead free assembly is now widely adopted the industry is still exploring a variety of options for lead free alloys. Attempts to standardize on a single alloy for either reflow or wave
.. read more
IPC Solder Products Value Council (SPVC) Lead-Free Technical Subcommittee Report: Take Action Limits (TAL) for SAC305 Lead Free Automated Soldering...
At present there are a large number of materials that have been proposed as replacements for lead containing solder for reflow and wave and selective soldering.
Unlike solder paste in a reflow
.. read more
Vibration and Mechanical Shock Testing
Little data has been generated on the performance of lead-free solders under vibration and mechanical shock. What data exists suggests that lead-free solders may be less reliable than eutectic
.. read more
Implementing Quality and Reliability on the Assembly Line
Many will look to IPC standards for advice or workmanship requirements for electronic assemblies. Some will find a copy of IPC-A-610 Acceptability of Electronic Assemblies and stop there. But I
.. read more
High Performance Work Teams in EMS The Critical Difference
This presentation attempts to convince the reader that while all the logistical,equipment,financial and process aspects of any business are important,the high performance work team is the criti
.. read more
Manufacturing Quality Issues from the EMS Perspective
As more electronic assembly moves from OEM to EMS providers,a number of key issues arise in the overall value stream of production. This presentation will provide a comprehensive look at qualit
.. read more
Microvia Reliability Failure Modes
Recent increases in assembly temperatures in response to removing lead from solder used in printed circuit boards (PCBs)
assembly has increase the strain and stress on interconnect structures.
.. read more