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WAFERLEVELRELIABILITY

ASSESSMENTPLAN

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List reliability degradationmechanisms

For each reliability degradationmechanism,list the structuresthat could be

impacted(Example:

Electromigration-- First metal,w/ and w/o steps)

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Prioritize-- Find the mostsensitivestructuresfor each reliability degradation

mechanism

Evaluate structureson current PC patterns-- Are the mostsensitive

structuresrepresented?

Determineadditional structures

Designadditional teststructures

Performappropriatecorrelationstudies(to burn-in/tempcycle/HAST

Determinesensitivityto known or suspectedvariable/problemareas

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