What is MTTF (mean time to failure)?
The average time until a non-repairable product fails. It is used as an indicator of product lifetime.
Field: Reliability
MTTF (mean time to failure) in the explanations
With a constant failure rate, MTTF is the reciprocal of the failure rate: 1 ÷ (1×10⁻⁵) = 1×10⁵ hours, about 11 years.
What is the mean time to failure (MTTF) of a part with a co…Black's equation gives mean time to failure as MTTF = A·J⁻ⁿ·exp(Ea/kT): inversely proportional to current density J to the power n (about 2) and exponentially shorter at higher temperature.
In Black's equation for wire lifetime under electromigratio…Mean time from failure to completed repair is MTTR, and mean time to failure for non-repaired parts is MTTF.
Which correctly describes MTBF (mean time between failures)?
Questions that mention MTTF (mean time to failure) (5)
- What is the mean time to failure (MTTF) of a part with a constant failure rate of 1×10⁻⁵ per hour?
- In Black's equation for wire lifetime under electromigration, which factors shorten the lifetime?
- Which correctly describes MTBF (mean time between failures)?
- What does the failure-rate unit FIT mean?
- When the failure rate λ is constant, which expression gives the probability of no failure up to time t (reliability) R(t)?
Related terms
Black's equation Electromigration Arrhenius model Bathtub curve ESD (electrostatic discharge) FIT rate Hot carrier injection (HCI) Latch-up NBTI (negative bias temperature instability) Soft error