Modeling Electromigration Lifetime Under Bidirectional Current Stress

Jiang Tao, Nathan W. Cheung, Chen-Ming Hu

Research output: Contribution to journalArticle

15 Scopus citations


Electromigration reliability of interconnect under bidirectional current stress has been studied in a wide frequency range (mHz to 200 MHz). Experimental results show that the ac lifetime rises with the stress current frequency. The current density exponent and the activation energy of ac lifetime are found to be twice that of dc lifetime. Pure ac current stress failure at extremely high current density is believed to result from thermal migration of metal at hot/cold transition points.

Original languageEnglish
Pages (from-to)476-478
Number of pages3
JournalIEEE Electron Device Letters
Issue number11
StatePublished - 1 Jan 1995

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