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What is the difference between MTBF and expected lifespan?
We provide a clear explanation of the difference between MTBF and expected lifespan in switching power supplies for AC/DC power adapters — desktop & wall-mount.
AC/DC Power Adapters — Desktop & Wall-Mount: What's the Difference Between MTBF and Expected Lifetime in Switching Power Supplies?
Both MTBF (Mean Time Between Failures) and expected lifetime are important indicators of product reliability
MTBF (Mean Time Between Failures) refers to the average time between failures, indicating the average continuous operation time without failure during operation or testing, and represents the average time when reliability decreases to 36.8%.
The commonly used estimation methods today include the Part Count and Stress Analysis approaches, based on standards such as MIL-HDBK-217F, Telcordia SR332, Siemens Norm, Fides, or UTE C 80-810 (RDF2000).
On the other hand, regarding expected lifetime, the lifespan of AC/DC Power Adapters — Desktop & Wall-Mount and switching power supplies is determined by the lifespan of aluminum electrolytic capacitors. In practice, power supplies are operated under specific conditions to calculate the thermal coefficient of electrolytic capacitors, which is used to estimate a reference value for lifetime.
Want to use AC/DC Power Adapters — Desktop & Wall-Mount for a longer time? What should you do?
If you are looking for long-life products, please contact our sales team.
We will propose products that meet your requirements.