Circuit reliability

Circuit reliability (also time availability) (CiR) is the percentage of time an electronic circuit was available for use in a specified period of scheduled availability. Circuit reliability is given by

$T_{s}=T_{a}+T_{o}$

where $T_{o}$ is the circuit total outage time, $T_{s}$ is the circuit total scheduled time, and $T_{a}$ is the circuit total available time. In addition, circuit reliability is the expected lifespan of operation of a functioning system under nominal conditions.

References

 This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C". (in support of MIL-STD-188)

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