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← ScienceWhich consequence results when thermal stress fractures epoxy-sealed electronic components?
A)Delamination reduces thermal dissipation efficiency✓
B)Passivation layer blocks ionic migration
C)Dopant diffusion creates localized shorts
D)Dielectric breakdown induces inductive heating
💡 Explanation
Fracturing weakens the epoxy reducing its adhesion; interfacial DEBONDING occurs because thermal cycling induces differential expansion. Therefore, delamination lowers thermal conductivity, rather than creating electrical shorts because mobile ions are immobilized and electrical conductivity is unaffected.
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