Your solution map
Wafer probing contact and thermal-control validity
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 paths3 candidate solutions3 sources
BLNKK's current understanding
Please check the details- Object and structure
- Test contacts on wafer pads, bumps, copper pillars and framed CSP/WLP devices
- Stage of occurrence
- Wafer sort, temperature-controlled probing and post-dicing framed-wafer testing
- Observable symptoms
- Unstable probe contact, false opens, temperature-dependent readings or probe-mark damage
- Engineering decision
- Compare contact baselines, probe force and actual temperature before separating test artifacts from device faults
Paths to assess first
Paths serve different purposes and can be combined01
Probe-contact and mark baselinesCheck pad/bump geometry, probe force and marks to establish a repeatable contact baseline.
First02
Instrument calibration and actual-temperature controlCalibrate instruments and guarding, then check chuck and actual DUT temperatures and drift.
First03
Frame, fixture and contact retest controlsCompare actual wafer/frame support, coordinates and retests to separate fixture artifacts from persistent device abnormalities.
FirstCurrent candidate solutions
Sample suitability still needs confirmationDirect candidateApollo vertical probe cardsFormFactor · Can help answer: Compare pillar/bump contact and probe marks to rule out contact-induced false failures; the card needs a configured electrical tester.
→Supporting analysis or measurementTS200-SE low-noise thermal wafer probingMPI Corporation · Can help answer: Controls contact, shielding and chuck temperature for external measurements; chuck temperature is not automatically junction temperature.
→Supporting analysis or measurementFP3000W framed-wafer proberTokyo Seimitsu (ACCRETECH) · Can help answer: Corrects framed-device coordinates for probing; requires a test head and cannot identify buried opens from geometry correction alone.
→Next: confirm engineering conditionsUse 4 key conditions to adjust the assessment order, then choose solutions to compare.
Check engineering conditions →