Your solution map
Warpage reversal during cooling in large 2.5D FCBGA packages
Check BLNKK's understanding of the problem, then review priority paths, candidate solutions and missing conditions.
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Your solution map
Check the problem definition, then choose which solutions to explore.
3 priority paths42 candidate solutions47 sources
BLNKK's current understanding
Please check the details- Package architecture
- 2.5D / FCBGA / large multi-die package
- Observed behavior
- Warpage changes direction during cooling
- Evaluation stage
- Design validation / material and structural selection
- Potential variables
- Substrate coefficient of thermal expansion (CTE), mold compound curing, copper distribution, and die placement
- Missing information
- Dimensions, thermal history, material viscoelasticity, and constraints
Paths to assess first
Paths serve different purposes and can be combined01
Thermal warpage and topography measurementLocate the reversal temperature range
First02
Thermomechanical simulation and model calibrationSeparate material and boundary effects
First03
Substrate and interface material designCompare CTE, Tg, and modulus
First04
Structural and process-window validationCheck risk redistribution after changes
LaterCurrent candidate solutions
Sample suitability still needs confirmationMeasurementPS600T / PS600S thermal warpage measurement platformsAkrometrix · Can help answer: When and where does reversal occur?
→SimulationCelsius Studio 3D-IC thermomechanical analysisCadence · Can help answer: Which conditions cause reversal?
→MaterialsMCL-E-770G series low-CTE substrate materialsResonac · Can help answer: Can material replacement reduce deformation?
→Next: confirm engineering conditionsUse 3 key conditions to adjust the assessment order, then choose solutions to compare.
Check engineering conditions →