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QUALITY ASSURANCE - - - - - - - - - - - - - - - - - - - - - -
quality factors. lot inspection is executed based
on Mll-STO-1050.
department for products which were judged good
in 100% test ... the final process in manufac-
turing. Though 100% yield is expected, sampling
fnspection is executed to prevent mixture of bad
product by mistake. The inspection is executed not
only to confirm that the products have met the
users' requirements but also to consider potential
(2) Reliability Assurance Tests
Report
Quality Assurance Dept.
Report
To assure the reliability of semiconductor devices,
reliability tests and tests on individual manufac-
turing lots that are required by the user, are peri-
odically performed.
Failure Analysis
Countermeasure
Execution of
Countermeasure
Follow-up and Confirmation
of Countermeasure Execution
L ___________ _
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Sales Engineering Dept.
Reply
Customer
Figure 4 Process Flow Chart of Field Failure
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