I just want to point out that is not how MTBF works. MTBF (and MTTF) are used in a group of components, and cannot be used to estimate lifetime of a single comp

I just want to point out that is not how MTBF works. MTBF (and MTTF) are used in a group of components, and cannot be used to estimate lifetime of a single component. This does not say that, on average, each component will last 285 years. This says that, given a group of components (if you bought 2.5M of them, for example) there will be a failure every 2.5 Mhours of operating time (so for 2.5M components, every hour one will fail).