Category Archives: EDX/EDS/SEM/IMC/FTIR


Jan24
Top ENIG PCB Issues: Black Pad and Phosphorus-Rich Layers Explained with Prevention Tips

post on January 24, 2025

With the rapid adoption of smartphones, the trend toward miniaturized electronic products, and the EU’s requirements for lead-free manufacturing, Electroless Nickel Immersion Gold (ENIG) surface treatment PCB has become a popular choice for many electronic products. This is largely due … Continue reading →

EDX/EDS/SEM/IMC/FTIR, PCB/FPC/PTF, Process, Quality, Reliability, SMT, Soldering     WorkingBear    Views (8,949)     comment (0)
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Sep19
Does the Gold Thickness in ENIG PCBs Affect Component Detachment?

post on September 19, 2024

Does the Gold Thickness in ENIG PCBs Affect Component Detachment? Do you know how the thickness of the gold layer in ENIG surface-finished PCBs impacts soldering quality? What role does the gold layer play in PCBA soldering? How could the … Continue reading →

EDX/EDS/SEM/IMC/FTIR, PCB/FPC/PTF, Quality, Reliability, SMT, Soldering     WorkingBear    Views (2,863)     comment (0)
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May02
Concept Clarification: IMC Layer Fracture Despite the Formation of Effective Solder Joints

post on May 2, 2024

In this blog, Workingbear has explored the causes and analysis of soldering cracks and electronic component detachment in several articles. It has consistently mentioned that most of the fractures occurring when electronic components detach happen at the Intermetallic Compound (IMC) … Continue reading →

EDX/EDS/SEM/IMC/FTIR, Quality, Reliability, SMT, Soldering     WorkingBear    Views (4,972)     comment (0)
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Nov13
Why BGA soldering ball always crack(3)? IMC layer growth is a certain result to form the soldering joints

post on November 13, 2019

The Intermetallic Compound (IMC) layer grows in the interface between Cu-based, Ni-based and Sn-solder is the certain result of the chemical reaction that forming the soldering joint. But the IMC layer is also the weakest location of the solder bonding-force. … Continue reading →

Design, EDX/EDS/SEM/IMC/FTIR, SMT, Soldering     WorkingBear    Views (19,694)     comment (0)
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