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mean cycles between failure (MCBF)

Mean Cycles Between Failure (MCBF) is a specification used for the failure frequency of electronic and electromechanical components and storage units such as tape drives

. The MCBF value is a failure value that depends on the mean number of usage activities. In the case of a relay

, this can be the number of switching cycles that a relay switches without failure. It is an empirical value of manufacturing quality. TheMCBF value can be determined by the predetermined number of fault-free switching cycles and the number of faults.

The MCBF value, like mean time between failures (MTBF), is used to specify product reliability. For tape drives, the MCBF value is approximately 1 to 2 million cycles. There is a relationship over time between the MCBF value and the Mean Time Between Failures (MTBF). To do this, the MCBF must be divided by the switching cycles.

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Englisch: mean cycles between failure - MCBF
Updated at: 21.06.2018
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