Hi, I'm looking to deploy the BME688 in harsh environments such as livestock barns. By harsh I mean there are continuously high levels of Ammonia, Hydrogren Sulfide, etc. Is the BME688 suitable for these types of environments with proper packaging? Or will continuous high levels of certain VOCs shorten the life of the sensor? Is there any information on mean time between failure (MTBF) for this sensor? Any input would be appreciated! Thanks!
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We can't generally mention a lifetime in years, since this depends on the operating conditions in customer's application. We have done qualification tests according to JEDEC standards (see our qualification report). The typical assumption of accelerated lifetime tests like for instance a THB or HTOL is that 1000 h of such a test represents the field load of 10 years. We have passed such tests. Beyond that, we have the sensors in the field since 2016 without issues and are also not aware that BMEs would fail after a certain number of years of operation. The underlying gas sensor technology is established in the Automotive field for nearly 2 decades.
Thanks for the response. I understand that lifetime varies widely depending on specific usecases. Can you provide me a link to the JEDEC qualification report please? I'm unable to find it.
You could access the document if you have JEDEC account.
THB (JESD22-A101C) and HTOL test (JESD22-A108D) standards: