CERAMIC CAPACITORS

IN-PRODUCTION QUALITY ASSURANCE
All manufacturing orders are accompanied with quality assurance
travel cards to record Quality inspections and actions carried out
at all stages of the production process.
A computerized system enables to handle all data required to
ensure proper traceability of production batches.
RELIABILITY
The reliability of any product is represented by its capability for
fail-safe performance under determined operating conditions over
a given period.
Applicable standards specify :
The reliability R (t) of electronic components is given by the
formula R (t) = eT, where = failure rate (10n/h), being taken
constant for the test duration. Reliability levels are characterized
by the value of the failure rate and are inversely proportional
to . In I.E.C. document 271, the failure concepts are identified
and classified by causes (mishandling : failures attributable to
operating conditions beyond specified limits), sudden or gradual
occurrence degrees (partial or complete failure), or combined
causes. The curve shown below is typical of a failure rate vs. time
where areas A, B, C, are representative of the following failures
periods :
A period of premature failures,
B period of constant failure rate,
C period of attrition failures.