What is mtbf?

Some articles on mtbf:

Soft Error Rate
... as either number of failures-in-time (FIT), or mean time between failures (MTBF) ... MTBF is usually given in years of device operation ... To put it in perspective, 1 year MTBF is equal to approximately 114,077 FIT (approximately ) ...
Failure Rate
... In practice, the mean time between failures (MTBF, 1/λ) is often reported instead of the failure rate ... The reason for the preferred use for MTBF numbers is that the use of large positive numbers (like 150.000 hours) is more intuitive and easier to remember than very small ... The MTBF appears frequently in the engineering design requirements, and governs frequency of required system maintenance and inspections ...
Mean Time Between Failures - Variations of MTBF
... There are many variations of MTBF, such as mean time between system aborts (MTBSA) or mean time between critical failures (MTBCF) or mean time between unit replacement (MTBUR) ...
Service Life
... is different from a predicted life, or MTTF/MTBF (Mean Time to Failure/Mean Time Between Failures)/MFOP (maintenance-free operating period) ... mission time and reliability in comparison to MTBF and service life ... system can have a mission time of less than one minute, a service life of 20 years, active MTBF of 20 minutes, dormant MTBF of 50 years and a reliability of.999999 ...
Modular Power Supply Unit - Life Span
... Life span is usually measured in mean time between failures (MTBF) ... Higher MTBF ratings are preferable for longer device life and reliability ... or a larger or higher speed fan can help to contribute to a higher MTBF rating by keeping critical components cool ...