1, [[lambda].sub.P] = 0.1, [[lambda].sub.F] = 0.01 and [[lambda].sub.R] = 0.2 , then MTTF
= 1/[[lambda].sub.F] = 100, MTTR = 1/[[lambda].sub.R] = 5, MTBF = MTTF
+ MTTR = 105, A = MTTF/MTBF = 100/500 = 0.9524, MTTP = 1/[[lambda].sub.P] = 10, MTTP' = MTTP/A = 10.5, so [[lambda]'.sub.P] = [[[lambda].sub.P][[lambda].sub.R]/[[[lambda].sub.F] + [[lambda].sub.R]] = [0.1 x 0.2]/[0.01 + 0.2] = 0.09524.
The MLE of MTTF
under a normal operation stress ([S.sub.0]) is
and Trivedi, K.S., "Conditional MTTF
an its computation in Markov reliability models", Proceedings of the Annual Reliability & Maintainability Symposium, 1993, pp.
In this equation, [tau] is the MTTF
, [U.sub.e] is the activation energy, k = 8.6174 x 10-5eV/[degrees]K is the Boltzmann's constant, and T is the absolute temperature.
This fact and careful component selection, in addition to low power (thermal) dissipation, have resulted in a greater than 60-year mean time to failure (MTTF
) for the PureSource line of oscillators.
The MAGX-001214-500L00 runs between the 1200 MHz 1400 MHz Frequency range and boasts a mean time to failure (MTTF
) of 5.3*106hours, and can be availed as both flanged and flangeless packaged devices.
Device current also affects meat, time to failure (MTTF
The MMIC GaAs FET chip in the AH001R2-12 has exhibited an MTTF
of [10.sup.9] hours at 150 [degrees] C.
Based on DC life tests at accelerated temperature, a median-time-to-failure (MTTF
) of more than 5 x [10.sup.6] hours has been projected at a channel temperature of 150 [degrees] C.
The MG08 features 7,200rpm performance, a 550TB per year workload rating 3 , a 2.5 million-hour MTTF
4 , a 512Mib cache buffer 5 , and a choice of SATA and SAS interfacesall in an industry-standard, 3.5-inch 6 form factor.
The MG08 features 7,200rpm performance, a 550TB per year workload rating, a 2.5 million-hour MTTF
, a 512Mib cache buffer and a choice of SATA and SAS interfaces--all in an industry-standard, 3.5-inch form factor.
The authors in  investigated the effect of redundancy level on Mean Time to Failure (MTTF
) of a cluster based WSN.