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MTBF or FIT Value

SGhar.1
Associate
 
1 ACCEPTED SOLUTION

Accepted Solutions
PatrickF
ST Employee

Hi @SGhar.1​ 

Maybe you could have been added more details on your question.

Here is the values for overall STM32MP15x family :

  • 16.9 FITs
  • MTBF @ Tj=25°C: 81739 Years
  • MTBF @ Tj=55°C: 6754 Years
  • MTBF @ Tj=85°C: 847 Years

These number are limited by the sample size, it is not a failure distribution screened by our tests (0 FAIL in our 2 years rolling HTOL monitoring tests).

We can estimate that the intrinsic quality level is much better.

Enlarging the calculation to the whole ST product range using same technology, we have:

  • EFR (Early Failure Rate) <50 PPM (with 0 FAIL also limited by the sample size)
  • <4.40 FITs

Regards,

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PatrickF
ST Employee

Hi @SGhar.1​ 

Maybe you could have been added more details on your question.

Here is the values for overall STM32MP15x family :

  • 16.9 FITs
  • MTBF @ Tj=25°C: 81739 Years
  • MTBF @ Tj=55°C: 6754 Years
  • MTBF @ Tj=85°C: 847 Years

These number are limited by the sample size, it is not a failure distribution screened by our tests (0 FAIL in our 2 years rolling HTOL monitoring tests).

We can estimate that the intrinsic quality level is much better.

Enlarging the calculation to the whole ST product range using same technology, we have:

  • EFR (Early Failure Rate) <50 PPM (with 0 FAIL also limited by the sample size)
  • <4.40 FITs

Regards,

In order to give better visibility on the answered topics, please click on 'Select as Best' on the reply which solved your issue or answered your question. See also 'Best Answers'

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.