Mean Time to Failure (MTTF) is a measure used to predict the average time a non-repairable system or component operates before it fails. It is commonly applied in fields like electronics and machinery to assess reliability. MTTF helps manufacturers and engineers understand product lifespan and plan maintenance or replacements. Calculating MTTF involves dividing the total operational time of a group of identical items by the number of failures that occurred during that time. This metric is crucial for industries relying on equipment performance, as it aids in minimizing downtime and improving overall efficiency in systems like automotive and computer hardware.