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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Prediction of Drop Impact Reliability for Electronics Using Finite Element Analyses
This paper presents some of the recent in-situ studies of drop impact reliability for electronic equipment using Finite Element Analyses. The work covers simulation methods, verification wit
.. read more
Effects of BGA Rework on Board-Level Reliability
The research goal was to establish a limit for the number of rework cycles for Ball Gird Arrays (BGAs) and to determine the clearance required between a BGA and its surrounding components on
.. read more
Non-Destructive BGA Rework Using Infrared Heating Technology
During the past few years, it has become increasingly difficult to physically rework printed circuit board (PCB) assemblies. Such mundane operations as soldering, desoldering and component r
.. read more
Assembly Challenges of Die and Die-Size BGAs
This paper presents assembly challenges of mixed area array technologies covering Very Thin ChipArray® Ball Grid Array (CVBGA) and its Land Grid Array version (CV-LGA), embedded Wafer Level
.. read more
Assembly Cleanliness and Whisker Formation
This paper describes the results of a whisker formation study on SAC305 assemblies,evaluating the effects of cleanliness and lead-frame materials in room temperature/high humidity (25°C/85%RH)
.. read more
Stereo Vision Based Automated Solder Ball Height Detection
Solder ball height inspection is essential to the detection of potential connectivity issues in semi-conductor units. Current ball height inspection tools such as laser profiling,fringe project
.. read more
Reliability of Lead-Free LGAs and BGAs: Effects of Solder Joint Size,Cyclic Strain and Microstructure
An accelerated thermal cycle experiment comparing similarly constructed area array devices representing Land Grid Array
(LGA) and Ball Grid Array (BGA) technology with 0.254,0.30,and 0.40mm dia
.. read more
Mixed Metals Impact on Reliability
With the adoption of RoHS and implementation of Lead Free solders a major concern is how this will impact reliability. Both commercial and military hardware are impacted by this change even tho
.. read more
Evaluating the Accuracy of a Nondestructive Thermo Couple Attach Method for Area Array Package Profiling
The oven recipe,which consists of the reflow oven zone temperature settings and the speed of the conveyor,will determine a specific time-temperature profile for a given PCB assembly. In order t
.. read more
Thermal Cycle Reliability Study of Vapor Phase BGA Solder Joints
Prior to committing production boards to vapor phase soldering,we performed an evaluation to assess reliability and evaluate the vacuum soldering option. The reliability of vapor phase processe
.. 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
Solder Charge Grid Array: Advancements in the Technology of Surface Mount Area Array Solder Joint Attachment
Surface mount area arrays (SMAA) have been in existence for decades and are increasingly becoming more important as printed circuit board (PCB) assemblies become further complex with package mi
.. read more
The Effects of Non-filled Microvia in Pad on Pb-free Solder Joint Reliability of BGA and QFN Packages in Accelerated Thermal...
The High Density Packaging Users Group (HDPUG) Consortium has completed an experiment to investigate the effect of non-filled microvias in SMT solder joint pads and the associated solder voids
.. read more
Mechanical Shock Test Performance of SAC105 (Sn-1.0Ag-0.5Cu) and Sn-3.5Ag,BGA Components with SAC305 Solder Paste on NiAu and OSP Board Surface...
Many BGA and CSP component suppliers have begun shipment of components with a variety of second generation lead-free
solder ball alloys based on the improved mechanical shock resistance. Althou
.. 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
NASA-DoD Lead-Free Electronics Project: Mechanical Shock Test
Mechanical shock testing was conducted by Boeing Research and Technology (Seattle) for the NASA-DoD Lead-Free Electronics Solder Project. This project is follow-on to the Joint Council on Aging
.. read more
Solving the Metric Pitch BGA & Micro BGA Dilemma
Solving "Fine Pitch" Metric Pitch BGA routing is becoming increasingly challenging for PCB design layout. There are solutions but they are very hard to find. This presentation will cover common
.. read more
THE EFFECT OF FILLING VIA-IN-PAD ON VOIDING RATES IN PWB ASSEMBLY FOR BGA COMPONENTS
The debate on the effect of voiding on BGA reliability has continued for years. Many PWB assemblers strive to minimize voiding,particularly with the advent of lead-free processing and in fine f
.. read more
The Effect of Filling VIA-In-Pad-On Voiding Rates in PWB Assembly for BGA Components
The debate on the effect of voiding on BGA reliability has continued for years. Many PWB assemblers strive to minimize
voiding,particularly with the advent of lead-free processing and in fine f
.. read more
A Comparison Study on Sn3.5Ag and Sn3.8Ag0.7Cu C5 Lead Free Solder System
A comparison study was carried out with Sn3.5Ag and Sn3.8Ag0.7Cu solder balls on Ball Grid Array (BGA) components
with Cu/Ni/Au pad finishing. This study shows that Sn3.5Ag C5 solder system per
.. read more
Reliability of CCGA and PBGA Assemblies
Area Array Packages (AAPs) with 1.27 mm pitch have been the packages of choice for commercial applications; they are now
starting to be implemented for use in military and aerospace application
.. read more
Vibration Fatigue Evaluation on Solder Joints of Under-Filled BGA
A previously developed ball grid array (BGA) solder joint vibration fatigue life prediction model,which was experimentally
validated by Test Vehicle One (TV1) test data for the BGAs with and wi
.. read more
Solderability Testing Methodologies for BGA Packages
Solderability testing is carried out at the IC (Integrated Circuit) manufacturer’s end to evaluate the quality of the IC
package terminals in terms of solder wetting ability. Current industrial
.. read more
HDPUG's Reliability Testing and Data Analysis of High-Density Packages Lead-Free Solder Joints
Temperature cycling test and statistical analysis of various high-density packages on PCBs with SnCu HASL,NiAu,
and OSP finishes are investigated in this study. Emphasis is placed on the determ
.. read more
A Novel Epoxy Flux for Lead-Free Soldering
A novel liquid halide-free PK-002,epoxy flux,is reported for SnAgCu soldering,where the thermally cured flux
residue is designed to provide an interference-free service performance,in addition
.. read more
2D Off-line X-ray Inspection in the SMT Production Line: Working Towards the Zero-Defect Goal
The goal of SMT production is a zero-defect process in which flawed materials never get to the customer; however,
in the ideal scenario,zero-defect production would mean that no flawed products
.. read more
Prediction of Drop Impact Reliability for Electronics Using Finite Element Analyses
This paper presents some of the recent in-situ studies of drop impact reliability for electronic equipment using Finite Element Analyses. The work covers simulation methods, verification wit
.. read more
Effects of BGA Rework on Board-Level Reliability
The research goal was to establish a limit for the number of rework cycles for Ball Gird Arrays (BGAs) and to determine the clearance required between a BGA and its surrounding components on
.. read more
Non-Destructive BGA Rework Using Infrared Heating Technology
During the past few years, it has become increasingly difficult to physically rework printed circuit board (PCB) assemblies. Such mundane operations as soldering, desoldering and component r
.. read more
Assembly Challenges of Die and Die-Size BGAs
This paper presents assembly challenges of mixed area array technologies covering Very Thin ChipArray® Ball Grid Array (CVBGA) and its Land Grid Array version (CV-LGA), embedded Wafer Level
.. read more
Assembly Cleanliness and Whisker Formation
This paper describes the results of a whisker formation study on SAC305 assemblies,evaluating the effects of cleanliness and lead-frame materials in room temperature/high humidity (25°C/85%RH)
.. read more
Stereo Vision Based Automated Solder Ball Height Detection
Solder ball height inspection is essential to the detection of potential connectivity issues in semi-conductor units. Current ball height inspection tools such as laser profiling,fringe project
.. read more
Reliability of Lead-Free LGAs and BGAs: Effects of Solder Joint Size,Cyclic Strain and Microstructure
An accelerated thermal cycle experiment comparing similarly constructed area array devices representing Land Grid Array
(LGA) and Ball Grid Array (BGA) technology with 0.254,0.30,and 0.40mm dia
.. read more
Mixed Metals Impact on Reliability
With the adoption of RoHS and implementation of Lead Free solders a major concern is how this will impact reliability. Both commercial and military hardware are impacted by this change even tho
.. read more
Evaluating the Accuracy of a Nondestructive Thermo Couple Attach Method for Area Array Package Profiling
The oven recipe,which consists of the reflow oven zone temperature settings and the speed of the conveyor,will determine a specific time-temperature profile for a given PCB assembly. In order t
.. read more
Thermal Cycle Reliability Study of Vapor Phase BGA Solder Joints
Prior to committing production boards to vapor phase soldering,we performed an evaluation to assess reliability and evaluate the vacuum soldering option. The reliability of vapor phase processe
.. 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
Solder Charge Grid Array: Advancements in the Technology of Surface Mount Area Array Solder Joint Attachment
Surface mount area arrays (SMAA) have been in existence for decades and are increasingly becoming more important as printed circuit board (PCB) assemblies become further complex with package mi
.. read more
The Effects of Non-filled Microvia in Pad on Pb-free Solder Joint Reliability of BGA and QFN Packages in Accelerated Thermal...
The High Density Packaging Users Group (HDPUG) Consortium has completed an experiment to investigate the effect of non-filled microvias in SMT solder joint pads and the associated solder voids
.. read more
Mechanical Shock Test Performance of SAC105 (Sn-1.0Ag-0.5Cu) and Sn-3.5Ag,BGA Components with SAC305 Solder Paste on NiAu and OSP Board Surface...
Many BGA and CSP component suppliers have begun shipment of components with a variety of second generation lead-free
solder ball alloys based on the improved mechanical shock resistance. Althou
.. 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
NASA-DoD Lead-Free Electronics Project: Mechanical Shock Test
Mechanical shock testing was conducted by Boeing Research and Technology (Seattle) for the NASA-DoD Lead-Free Electronics Solder Project. This project is follow-on to the Joint Council on Aging
.. read more
Solving the Metric Pitch BGA & Micro BGA Dilemma
Solving "Fine Pitch" Metric Pitch BGA routing is becoming increasingly challenging for PCB design layout. There are solutions but they are very hard to find. This presentation will cover common
.. read more
THE EFFECT OF FILLING VIA-IN-PAD ON VOIDING RATES IN PWB ASSEMBLY FOR BGA COMPONENTS
The debate on the effect of voiding on BGA reliability has continued for years. Many PWB assemblers strive to minimize voiding,particularly with the advent of lead-free processing and in fine f
.. read more
The Effect of Filling VIA-In-Pad-On Voiding Rates in PWB Assembly for BGA Components
The debate on the effect of voiding on BGA reliability has continued for years. Many PWB assemblers strive to minimize
voiding,particularly with the advent of lead-free processing and in fine f
.. read more
A Comparison Study on Sn3.5Ag and Sn3.8Ag0.7Cu C5 Lead Free Solder System
A comparison study was carried out with Sn3.5Ag and Sn3.8Ag0.7Cu solder balls on Ball Grid Array (BGA) components
with Cu/Ni/Au pad finishing. This study shows that Sn3.5Ag C5 solder system per
.. read more
Reliability of CCGA and PBGA Assemblies
Area Array Packages (AAPs) with 1.27 mm pitch have been the packages of choice for commercial applications; they are now
starting to be implemented for use in military and aerospace application
.. read more
Vibration Fatigue Evaluation on Solder Joints of Under-Filled BGA
A previously developed ball grid array (BGA) solder joint vibration fatigue life prediction model,which was experimentally
validated by Test Vehicle One (TV1) test data for the BGAs with and wi
.. read more
Solderability Testing Methodologies for BGA Packages
Solderability testing is carried out at the IC (Integrated Circuit) manufacturer’s end to evaluate the quality of the IC
package terminals in terms of solder wetting ability. Current industrial
.. read more
HDPUG's Reliability Testing and Data Analysis of High-Density Packages Lead-Free Solder Joints
Temperature cycling test and statistical analysis of various high-density packages on PCBs with SnCu HASL,NiAu,
and OSP finishes are investigated in this study. Emphasis is placed on the determ
.. read more
A Novel Epoxy Flux for Lead-Free Soldering
A novel liquid halide-free PK-002,epoxy flux,is reported for SnAgCu soldering,where the thermally cured flux
residue is designed to provide an interference-free service performance,in addition
.. read more
2D Off-line X-ray Inspection in the SMT Production Line: Working Towards the Zero-Defect Goal
The goal of SMT production is a zero-defect process in which flawed materials never get to the customer; however,
in the ideal scenario,zero-defect production would mean that no flawed products
.. read more