Case 2040 ยท Public preview
Internal Ceramic-Layer Defects Can Control Ferrite-Bead Fracture
Three of 24 ferrite beads sectioned after a board push test were fractured.
MicrosectioningSEMPopulation comparisonFracture-orientation comparisonCeramic microstructure review
What the evidence preview establishes
Fracture correlated with internal delamination or knit-line flaws between green ceramic tape layers created during co-firing. Flaw orientation relative to the mounting pad influenced whether the bead fractured.
Why this case matters
When ceramic parts fracture during board loading, section both failed and surviving parts. Flaw orientation can distinguish a latent component defect from loading alone.
Full evidence reserved for MEMBER and STOREThe complete case includes the evidence sequence, four interpreted figures, alternative explanations, limitations, and practical application guidance.