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March 2001

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Thu, 8 Mar 2001 14:57:17 -0700
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We were debating  PTFE vs BT. Our simulations show that PTFE has less
stress. However, one of my colleagues argued that cu trace failures are
strain dominant failures, hence less stress does not mean better substrate
reliability. I don't know whether he is wrong or right. Please advise.

Thanks a lot,

Yuan Li

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