Impact of External Temperature Environment
on Large FCBGA Sn-Ag-Cu Solder Interconnect
Board Level Mechanical Shock Performance |
Tae-Kyu Lee*,† |
Correspondence:
Tae-Kyu Lee, Email: taeklee@cisco.com |
|
Abstract |
The mechanical stability of solder joints in electronic devices with Sn-Ag-Cu is a continuous issue since
the material was applied to the industry. Various shock test methods were developed and standardized tests
are used in the industry worldwide. Although it is applied for several years, the detailed mechanism of the
shock induced failure mechanism is still under investigation. In this study, the effect of external temperature
was observed on large Flip-chip BGA components. The weight and size of the large package produced a
high strain region near the corner of the component and thus show full fracture at around 200G level
shock input. The shock performance at elevated temperature, at 100℃ showed degradation based on board
pad designs. The failure mode and potential failure mechanisms are discussed |
Key Words:
Solder, Mechanical shock, FCBGA, Reliability |
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