Hi SebastianS,
Please check below comment for reference,
according to articles in this forum the accelerated lifetime tests have been performed for 1000 h to represent a normal workload for a lifetime of 10 years. We plan on using the BME in a product where the minimum expected lifetime will exceed the 10 years. By projecting the 1000 h test duration to a lifetime of 10 years, what is assumed on how frequently a measurement will be done under these workload conditions and can we thereby assume to exceed the lifetime expectancy by lowering the measurement frequency?
Normally the HTOL(High Temperature Operating Life) test will follow JESD22-A108D standard, I think customer can use this document for reference
Will the unit expectantly be more inaccurate if it ages? Therefore, taking a derating into account the influence of an aging unit could be compensated.
Customer can reference the sensor long term stability data in the datasheet, and normally the data is based on the accelerate aging test result
What are best practices for self-testing the sensor without another nearby measurement value as a reference, to detect a failing unit?
Customer can use self-test example code to check the sensor functions
Also, we plan on a storage temperature of -50°C which is below the sensor’s abs max ratings. Is it possible for the sensor to be placed under these conditions if a power up will only happen at temperatures > -45°C?
The sensor's storage range is from -45°C to +85°C(≤65% rH), and operating range is from -40°C to +85°C
Doesn't suggest to operate the sensor over above range
Thanks.
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