For the article on
CRT or
plasma display burn-in, see
Phosphor burn-in. Burn in is the process by which components of a system are exercised prior to being placed in service (and often, prior to the system being completely assembled from those components).The intention is to detect those particular components that would fail as a result of
infant mortality, that is, during the initial, high-failure rate portion of the
bathtub curve of component
reliability. If the burn in period is made sufficiently long (and, perhaps, artificially stressful), the system can then be trusted to be mostly free of further early failures once the burn in process is complete.
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the use of elevated temperature and or electrical stress to cause infant mortality failures so they may be removed prior to shipping product to a customer. Burn-In is common on new products until yield enhancement efforts have increased yield and decreased defect density.
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