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Secret
Guest	Posted: Thu Nov 06, 2025 10:38 am    Post subject: HTOL Failures: from Burn-in or from E-test?   The rel guys always blame e-test everytime they get HTOL failures due to EOS. EOS can be caused by their burn-in too, right? How can I tell if the EOS is due to burn-in or test? Secret
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FARel Engr
Joined: 20 Jun 2026 Posts: 76	Posted: Wed Nov 19, 2025 11:31 am    Post subject:   Secret, Here are my suggestions to you: 1) full FA on the failures; 2) EOS simulations. A bit of caution: some EOS occurrences will be difficult to trace to actual cause, since they can be caused by either burn-in or e-test. Don't expect to be able to trace all of them. FARel Engr
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