TAS2505-Q1: FIT confidence question

Imelda Zhang

Expert 3565 points

Part Number: TAS2505-Q1
Other Parts Discussed in Thread: TAS2505

Hi Expert,

Thanks a lot for your warm help!

My customer using TAS2505-Q1 in Auto Cockpit.

To meet ISO26262 standard, the FIT of TAS2505 must to meet 70%.

Is there any actions (like external circuit change/ Register) that we can do to meet the requirement of ISO26262?

Kind Regards

Imelda

over 1 year ago

0 Ivan Salazar over 1 year ago

TI__Guru* 99505 points

Hi Imelda.

Can you please elaborate on what are the requirements for this FIT?
I'll try to look for detail on this ISO standard but having the straightforward requirements would really help.

Best regards,
-Ivan Salazar
Applications Engineer

0 Imelda Zhang over 1 year ago in reply to Ivan Salazar

TI__Expert 3565 points

Hi Ivan,

Thanks a lot for your warm help!

You can refer to the ISO26262 P24. There is an requirement that the estimated failure should have a comparable confidence level of at least 70%.

Should the parameters equal to FIT 70% or not?

Thanks a lot!

0 Ivan Salazar over 1 year ago in reply to Imelda Zhang

TI__Guru* 99505 points

Hi Imelda,

Thanks for sharing for details on the standard requirement. So, I assume we need to provide an estimated failure rate based on field returns history, I'll check with our test and quality team and may reach out to you over email to provide further details.

Best regards,
-Ivan Salazar
Applications Engineer

0 Ivan Salazar over 1 year ago in reply to Ivan Salazar

TI__Guru* 99505 points

Hi Imelda,

Our TI.com site provides the following information (0.7) for FIT: MTBF and FIT Rate Estimator

Adjusting the calculation tool for 70% confidence level, the FIT is about 0.87.

Best regards,
-Ivan Salazar
Applications Engineer

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TAS2505-Q1: FIT confidence question