MTTF and MTBF - KBA210997

Version: **



What are MTTF and MTBF? 



MTTF (Mean Time to Failure) - describes the expected time to failure for a non-repairable system.

MTBF (Mean Time Between Failure) – The average time excludes the time spent waiting for repair, being repaired, being re-qualified, and other downing events such as inspections and preventive maintenance and so on; it is intended to measure only the time a system is available and operating.