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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Study on Solder Joint Reliability of Fine Pitch CSP
Nowadays,consumer electronic product is characterized with miniature,portable,light and high performance,especially for 3G mobile products. More and more fine pitch CSPs (0.4mm) come forth as t
.. read more
Low Cost High Reliability Assembly of POP with Novel Epoxy Flux on Solder Paste
A novel epoxy flux was developed with good compatibility with no-clean solder pastes,which imparts high reliability for BGA assembly at a low cost. This compatibility with solder pastes is achi
.. read more
Qualification of Solder Beading and Tombstoning in Passive Devices using Designed Experiments
Solder beading and tombstoning are observed increasingly with chip components as their size decreases. This is
even more crucial in today’s packaging,due to the high ratio of passive components
.. read more
Minimizing Voiding In QFN Packages Using Solder Preforms
According to Prismark Partners,the use of QFNs is growing faster than any package type except for flip-chip CSPs. Prismark
projects that by 2013,32.6 billion QFNs will be assembled worldwide,wh
.. read more
Flip Chip Package Qualification of RF-IC Packages
Quad Flat Pack No Leads (QFNs) are thermally enhanced plastic packages that use conventional copper leadframe with wire bonded interconnects. . These leadless components provide an advanced pac
.. read more
Head-In-Pillow: Are we still Snoozing?
-BA flux: Water soluble BA flux has a higher HiP risk relative to NC BA flux,likely due to higher surface oxidation risks.
-Deflux: Washing process using water or DIW in combination with other
.. read more
Addressing the Challenge of Head-In-Pillow Defects in Electronics Assembly
The head-in-pillow defect has become a relatively common failure mode in the industry since the implementation of Pb-free
technologies,generating much concern. A head-in-pillow defect is the in
.. read more
The Graping Phenomenon: Improving Pb-Free Solder Coalescence through Process and Material Optimization
As small surface-mount components such as 0201 and 01005 packages have entered volume assembly,manufacturers are observing increased instances of poor solder coalescence during reflow. The root
.. read more
A Study of 0201’s and Tombstoning in Lead-Free Systems,Phase II Comparison of Final Finishes and Solder Paste Formulations
Tombstoning,the phenomena where a chip component stands up on one end during the reflow cycle,is well-documented and understood in tin-lead systems. It is reported to occur more frequently in l
.. read more
0.3mm W.L CSP Assembly
Due to the ever-aggressive
miniaturization program that is rolling
through the electronics industry,the
next component that is fast approaching
this horizon is the 0.3mm CSP
• This paper will r
.. 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
Effects of Reflow Profile and Thermal Shock on Intermetallic Compound Thickness for SnPb and SnAgCu Solder Joints
During the solder reflow processes many reactions occur. There is the reduction of oxides on the metal surfaces,metal dissolution,wetting to different surfaces,and intermetallic compound format
.. read more
Running Lead Free Reflow Profiles Without Nitrogen
The widespread use of SAC-based (SnAgCu) lead-free solder paste drives the industry toward reflow profiles that are
considerably longer than those used for lead-bearing products. This is due to
.. read more
Understanding Stencil Requirements for a Lead Free Mass Imaging Process
Many words have been written about the impending lead free transition,during this period of frantic discovery lots has
been communicated about the reflow and alloy concerns; But the print proce
.. read more
Via (Plated Through Hole) Integrity with Lead Free Soldering
Bare printed wiring board materials require changes from today’s typical standard dicy cured FR4 materials in order to
support lead-free assembly. The High Density Packaging User’s Group has co
.. read more
Effect of Voiding on Solder Joint Shock and Thermal Cycle Reliability
Solder joint void has been considered a typical phenomenon in electronics assembly. Voids are caused by entrapped gases
produced during flux volatilization during SMT,air entrapment in plated t
.. read more
Effect of Surface Finish,Reflow Profile and High Temperature Aging on Drop Test Reliability of Lead Free CSPs
Chip scale packages (CSPs) are widely used in portable electronic products. Mechanical drop testing is a critical reliability
requirement for these products. With the switch to lead free solder
.. read more
Effect of Reflow Profile on SnPb and SnAgCu Solder Joint Shear Force
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the
solder joint. The degree of wetting,the microstructure (in particular t
.. read more
Oxidation and Topography of Powder in Pb-free Solder Paste
There are compelling reasons to study the relationship between oxidation and the topography of solder powder; these
include the following:
?? Customer requirements to reflow SAC-based (SnAgCu)
.. read more
Understanding the Impact of Accelerated Temperature Profiles on Lead-Free Soldering
Traditional reflow profiles for lead-free soldering typically require longer processing times due to elevated peak temperatures
and flux activation times defined by solder paste suppliers. Thes
.. read more
Maximizing Lead Free Wetting
As lead free assembly is ramping up,wetting of lead free solder pastes is surfacing as the major paste performance tradeoff.
Global efforts to significantly increase lead free wetting chemicall
.. read more
Optimizing Your Reflow Profile for Maximum Productivity and Profitability
Successful reflow soldering is a key to productivity and profitability,yet many assemblers may be using a nonoptimized
reflow profile.
Years ago,when IR ovens were the norm and solder pastes we
.. read more
Influence of Flux and Powder Morphology on Void Formation in Silicon Wafer Bumping
Use of solder paste as a material to bump silicon wafers for interconnection to other level of package interconnection is a
simple and cost effective process. However,the material properties of
.. read more
Preliminary Study on Lead-free Sn42Bi57Ag1 Solder Paste
With the growth of the concern on the environment,more and more efforts have been done to protect the earth,to
minimize the pollution on the environment. The use of the lead free solder is repl
.. read more
Defining Solder Paste Performance via Novel Quantitative Methods
Quantitative solder paste performance or use testing enables material formulators to focus on and maximize key
material traits such as wettability and printability. These same material test met
.. read more
Qualification of Solder Beading and Tombstoning in Passive Devices using Designed Experiments
Solder beading and tombstoning are observed increasingly with chip components as their size decreases. This is
even more crucial in today’s packaging,due to the high ratio of passive components
.. read more
Study on Solder Joint Reliability of Fine Pitch CSP
Nowadays,consumer electronic product is characterized with miniature,portable,light and high performance,especially for 3G mobile products. More and more fine pitch CSPs (0.4mm) come forth as t
.. read more
Low Cost High Reliability Assembly of POP with Novel Epoxy Flux on Solder Paste
A novel epoxy flux was developed with good compatibility with no-clean solder pastes,which imparts high reliability for BGA assembly at a low cost. This compatibility with solder pastes is achi
.. read more
Qualification of Solder Beading and Tombstoning in Passive Devices using Designed Experiments
Solder beading and tombstoning are observed increasingly with chip components as their size decreases. This is
even more crucial in today’s packaging,due to the high ratio of passive components
.. read more
Minimizing Voiding In QFN Packages Using Solder Preforms
According to Prismark Partners,the use of QFNs is growing faster than any package type except for flip-chip CSPs. Prismark
projects that by 2013,32.6 billion QFNs will be assembled worldwide,wh
.. read more
Flip Chip Package Qualification of RF-IC Packages
Quad Flat Pack No Leads (QFNs) are thermally enhanced plastic packages that use conventional copper leadframe with wire bonded interconnects. . These leadless components provide an advanced pac
.. read more
Head-In-Pillow: Are we still Snoozing?
-BA flux: Water soluble BA flux has a higher HiP risk relative to NC BA flux,likely due to higher surface oxidation risks.
-Deflux: Washing process using water or DIW in combination with other
.. read more
Addressing the Challenge of Head-In-Pillow Defects in Electronics Assembly
The head-in-pillow defect has become a relatively common failure mode in the industry since the implementation of Pb-free
technologies,generating much concern. A head-in-pillow defect is the in
.. read more
The Graping Phenomenon: Improving Pb-Free Solder Coalescence through Process and Material Optimization
As small surface-mount components such as 0201 and 01005 packages have entered volume assembly,manufacturers are observing increased instances of poor solder coalescence during reflow. The root
.. read more
A Study of 0201’s and Tombstoning in Lead-Free Systems,Phase II Comparison of Final Finishes and Solder Paste Formulations
Tombstoning,the phenomena where a chip component stands up on one end during the reflow cycle,is well-documented and understood in tin-lead systems. It is reported to occur more frequently in l
.. read more
0.3mm W.L CSP Assembly
Due to the ever-aggressive
miniaturization program that is rolling
through the electronics industry,the
next component that is fast approaching
this horizon is the 0.3mm CSP
• This paper will r
.. 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
Effects of Reflow Profile and Thermal Shock on Intermetallic Compound Thickness for SnPb and SnAgCu Solder Joints
During the solder reflow processes many reactions occur. There is the reduction of oxides on the metal surfaces,metal dissolution,wetting to different surfaces,and intermetallic compound format
.. read more
Running Lead Free Reflow Profiles Without Nitrogen
The widespread use of SAC-based (SnAgCu) lead-free solder paste drives the industry toward reflow profiles that are
considerably longer than those used for lead-bearing products. This is due to
.. read more
Understanding Stencil Requirements for a Lead Free Mass Imaging Process
Many words have been written about the impending lead free transition,during this period of frantic discovery lots has
been communicated about the reflow and alloy concerns; But the print proce
.. read more
Via (Plated Through Hole) Integrity with Lead Free Soldering
Bare printed wiring board materials require changes from today’s typical standard dicy cured FR4 materials in order to
support lead-free assembly. The High Density Packaging User’s Group has co
.. read more
Effect of Voiding on Solder Joint Shock and Thermal Cycle Reliability
Solder joint void has been considered a typical phenomenon in electronics assembly. Voids are caused by entrapped gases
produced during flux volatilization during SMT,air entrapment in plated t
.. read more
Effect of Surface Finish,Reflow Profile and High Temperature Aging on Drop Test Reliability of Lead Free CSPs
Chip scale packages (CSPs) are widely used in portable electronic products. Mechanical drop testing is a critical reliability
requirement for these products. With the switch to lead free solder
.. read more
Effect of Reflow Profile on SnPb and SnAgCu Solder Joint Shear Force
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the
solder joint. The degree of wetting,the microstructure (in particular t
.. read more
Oxidation and Topography of Powder in Pb-free Solder Paste
There are compelling reasons to study the relationship between oxidation and the topography of solder powder; these
include the following:
?? Customer requirements to reflow SAC-based (SnAgCu)
.. read more
Understanding the Impact of Accelerated Temperature Profiles on Lead-Free Soldering
Traditional reflow profiles for lead-free soldering typically require longer processing times due to elevated peak temperatures
and flux activation times defined by solder paste suppliers. Thes
.. read more
Maximizing Lead Free Wetting
As lead free assembly is ramping up,wetting of lead free solder pastes is surfacing as the major paste performance tradeoff.
Global efforts to significantly increase lead free wetting chemicall
.. read more
Optimizing Your Reflow Profile for Maximum Productivity and Profitability
Successful reflow soldering is a key to productivity and profitability,yet many assemblers may be using a nonoptimized
reflow profile.
Years ago,when IR ovens were the norm and solder pastes we
.. read more
Influence of Flux and Powder Morphology on Void Formation in Silicon Wafer Bumping
Use of solder paste as a material to bump silicon wafers for interconnection to other level of package interconnection is a
simple and cost effective process. However,the material properties of
.. read more
Preliminary Study on Lead-free Sn42Bi57Ag1 Solder Paste
With the growth of the concern on the environment,more and more efforts have been done to protect the earth,to
minimize the pollution on the environment. The use of the lead free solder is repl
.. read more
Defining Solder Paste Performance via Novel Quantitative Methods
Quantitative solder paste performance or use testing enables material formulators to focus on and maximize key
material traits such as wettability and printability. These same material test met
.. read more
Qualification of Solder Beading and Tombstoning in Passive Devices using Designed Experiments
Solder beading and tombstoning are observed increasingly with chip components as their size decreases. This is
even more crucial in today’s packaging,due to the high ratio of passive components
.. read more