This is to advise you that a Design and/or Process Change will be made to the following High Reliability product(s):
Product ID (Description): ALL B level FACT 1.5u products - / 883, SMD and JAN B.
See Table I for affected part numbers.
Proposed Date of Change: Datecode 0212 and onward
Description of Change: The FACT 1.5u B level devices manufactured after the above date will no longer have 100% production burn-in.
A burn-in process monitor has been established to ensure continued quality and reliability. Operational life burn-in will continue to be performed on FACT 1.5u JAN B and /883 product per standard Quality Conformance Inspection rules.
This reduction does not affect any S level, S level rad tolerant, B level rad tolerant or Custom -MLS products.
Under the guidelines of MIL-PRF-38535 QML process reduction procedures, National Semiconductor's Technology Review Board has reviewed and approved this process modification.
Effect of Change: This change should have no impact on quality or reliability to customers. FACT 1.5u is a mature product line which has been manufactured in the same FAB facility for 12 years. The FAB process is well understood and controlled. The burn-in process monitor that has been instituted will ensure continued process control.
Associated Notes / Table(s):
TABLE 1