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How to Manage Material Outgassing in Reflow Oven
In a lead-free reflow process, temperatures are higher, and materials use outgasses more than in a leaded reflow process. The trends toward higher density populated boards and more pin-in-pa
.. read more
JEITA’s Standardization Activity of 2nd Generation Lead-Free Solder Paste
1.Obtain suggestions from the solder manufactures
Low-Ag SAC Paste
•Increase in reflow temp
•Impact on thermal fatigue and wetting
Sn-Bi low-temp Paste
•Impact on shock strength
•Creep fatigue
.. 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
The Role of the Interfacial Intermetallic in Lead-Free Solder
The formation during the soldering process of the layer of intermetallic compound Cu6Sn5 at the solder substrate interface
provides the essential evidence that a metallurgical bond that is the
.. read more
Properties that are Important in Lead-Free Solders
The change to lead-free solders has forced the electronics industry to consider more than it ever has before what properties are important in a solder. When the tin-lead eutectic was the only s
.. read more
Performing Flux-Technology for Pb-Free SN100C Solders
SN100C (Sn99Cu0.7 with Ni- and Ge-micro-additions) is a lead-free solder alloy that is finding increased acceptance globally and holds promise as a mainstream solution in terms of long-term sol
.. read more
Impact Evaluation of Solder Transfer Peak Temperatures on C4NP Lead Free Solder Bumps
C4NP (Controlled Collapsed Chip Connection-New Process) is a novel solder bumping technology developed by IBM and
commercialized by Suss MicroTec. C4NP is a solder transfer technology where mol
.. read more
New Lead Free Solder Composition and Physical Properties of Printed Wiring Board Laminate Material To Suppress Lift-Off and Improve Reliability
Lift-off (fillet-lifting) and land-lifting phenomena,which occur in wave soldering with Sn-Ag-Cu (SAC) solders,depend
on the physical properties of the solder and the laminate material used. A
.. 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
On Solder Joints Reliability and Component Damage of Hand Soldered Lead-Free PTH and SMD Components
Due to the European legislations (RoHS and WEEE) consumer products need to be soldered with lead-free solders from the first of July 2006. Since several properties (physical,chemical,mechanical
.. read more
A Study of Implementing Lead free Soldering Process with Organic Solderability Preservative Coating In a High Volume Production Environment
As the global electronic industry marches toward the brave new world of environmentally conscious electronic manufacturing,lead free soldering has made some fundamental shifts in the processing
.. read more
How to Manage Material Outgassing in Reflow Oven
In a lead-free reflow process, temperatures are higher, and materials use outgasses more than in a leaded reflow process. The trends toward higher density populated boards and more pin-in-pa
.. read more
JEITA’s Standardization Activity of 2nd Generation Lead-Free Solder Paste
1.Obtain suggestions from the solder manufactures
Low-Ag SAC Paste
•Increase in reflow temp
•Impact on thermal fatigue and wetting
Sn-Bi low-temp Paste
•Impact on shock strength
•Creep fatigue
.. 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
The Role of the Interfacial Intermetallic in Lead-Free Solder
The formation during the soldering process of the layer of intermetallic compound Cu6Sn5 at the solder substrate interface
provides the essential evidence that a metallurgical bond that is the
.. read more
Properties that are Important in Lead-Free Solders
The change to lead-free solders has forced the electronics industry to consider more than it ever has before what properties are important in a solder. When the tin-lead eutectic was the only s
.. read more
Performing Flux-Technology for Pb-Free SN100C Solders
SN100C (Sn99Cu0.7 with Ni- and Ge-micro-additions) is a lead-free solder alloy that is finding increased acceptance globally and holds promise as a mainstream solution in terms of long-term sol
.. read more
Impact Evaluation of Solder Transfer Peak Temperatures on C4NP Lead Free Solder Bumps
C4NP (Controlled Collapsed Chip Connection-New Process) is a novel solder bumping technology developed by IBM and
commercialized by Suss MicroTec. C4NP is a solder transfer technology where mol
.. read more
New Lead Free Solder Composition and Physical Properties of Printed Wiring Board Laminate Material To Suppress Lift-Off and Improve Reliability
Lift-off (fillet-lifting) and land-lifting phenomena,which occur in wave soldering with Sn-Ag-Cu (SAC) solders,depend
on the physical properties of the solder and the laminate material used. A
.. 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
On Solder Joints Reliability and Component Damage of Hand Soldered Lead-Free PTH and SMD Components
Due to the European legislations (RoHS and WEEE) consumer products need to be soldered with lead-free solders from the first of July 2006. Since several properties (physical,chemical,mechanical
.. read more
A Study of Implementing Lead free Soldering Process with Organic Solderability Preservative Coating In a High Volume Production Environment
As the global electronic industry marches toward the brave new world of environmentally conscious electronic manufacturing,lead free soldering has made some fundamental shifts in the processing
.. read more