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Associate III
October 20, 2025
Solved

FIT rates (failure rates) - MTBF/MTTF calculations

Dear ST Technical Support,

I am looking for reliability data for the STM32L151 series microcontrollers, including:
- FIT rates (failure rates)
- MTBF/MTTF calculations
- Lifetime expectations
- Qualification test results

Could you please provide the relevant documentation or direct me to the appropriate resources?

Thank you.

This topic has been closed for replies.
mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
October 20, 2025

No one will answer that question here.

So please ask it in https://ols.st.com/ or https://my.st.com/ols

Please refer to this knowledge base: How to get MTBF/FIT values on STMicroelectronics products 

Thank you for your understanding

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.

3 replies

mƎALLEm
ST Technical Moderator
October 20, 2025

Hello,

For  MTBF/MTTF questions please ask them over the ST online support: https://ols.st.com/

 

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
zhaowhongAuthor
Associate III
October 20, 2025

hello 

Waiting for the result online or waiting until tomorrow?

mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
October 20, 2025

No one will answer that question here.

So please ask it in https://ols.st.com/ or https://my.st.com/ols

Please refer to this knowledge base: How to get MTBF/FIT values on STMicroelectronics products 

Thank you for your understanding

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.