Your solution map
Rising thermal resistance during power cycling
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 paths11 candidate solutions15 sources
BLNKK's current understanding
Please check the details- Device / module
- IGBT or SiC power module; package and cooling structures unconfirmed
- Observed behavior
- Sustained or stepwise Rth rise during power cycling
- Test stage
- Accelerated power cycling / lifetime-model development
- Potential variables
- Die attach, substrate solder, top-side interconnects, thermal interface material, and clamping
- Missing information
- ΔTj, Tjmax, ton / toff, Rth calculation, electrical trends, and interrupted inspection
Paths to assess first
Paths serve different purposes and can be combined01
Inline thermal-resistance and electrical monitoringIdentify drift onset and covarying metrics
First02
Acoustic imaging and cross-section failure analysisLocate die-attach or solder delamination
First03
Interconnect resistance and bond integrityDistinguish wire or clip fatigue
First04
Lifetime models and mission profilesConnect test conditions to actual applications
LaterCurrent candidate solutions
Sample suitability still needs confirmationAcoustic analysisD9650Z power-module acoustic inspection systemNordson Test & Inspection · Can help answer: Which layer's acoustic image deteriorates with cycling?
→Failure-analysis servicesPower-semiconductor failure-analysis servicesEAG Laboratories · Can help answer: Which physical layer degradation corresponds to thermal-resistance drift?
→Lifetime modelsPower cycling, thermal models, and qualification guidanceInfineon · Can help answer: How do test conditions map to lifetime models?
→Next: confirm engineering conditionsUse 4 key conditions to adjust the assessment order, then choose solutions to compare.
Check engineering conditions →