Case 1654 ยท Public preview
Board Bending Can Turn an MLCC Flex Crack into a Hard Electrical Short
Two MLCCs were hard shorted, while six comparison capacitors from the same investigation remained electrically normal.
Electrical testingOptical microscopySEMMicrosectioningFailed/reference comparison
What the evidence preview establishes
Primary flexure fractures in both failed capacitors coincided with their electrical short sites. The fracture geometry supported PCBA bending stress, followed by electrical breakdown and extensive secondary cracking; comparison devices did not support defective capacitor manufacture as the primary cause.
Why this case matters
After an MLCC shorts, secondary damage can obscure the initiating crack. Locating the short relative to fracture geometry and comparing failed devices with nonfailed controls helps separate cause from consequence.
Full evidence reserved for MEMBER and STOREThe complete case includes the evidence sequence, four interpreted figures, alternative explanations, limitations, and practical application guidance.