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Original question:

TPS1H200A-Q1: MTTF data

OPA4348: MTTF Data

Cameron Perl
Expert 5765 points

Part Number: OPA4348

Hey team, I had a customer reach out to me inquiring about MTTF data. From my understanding this will be equivalent to the MTBF data we provide through our online tool https://www.ti.com/quality/docs/estimator.tsp. Here's my logic:

From my understanding mean time to failure refers to the point at which a device needs to be replaced or repaired to continue working. Now if I think about semiconductors I would consider a device failure to be the point at which the part needs to be replaced seeing as the only fix for it would be a newer part! So my guess is that within the semiconductor field MTBF and MTTF may be the same.

Is this correct? Do we take MTTF data for any devices?

Thanks!

  • Former Member
    0 Former Member

    Hi Cameron,

    Thanks for your question.  You make a good point and I would tend to agree to you.

    However, this is not my area of expertise.  So let me reach out to the quality team and see what they have to say.  I will get back to you as soon as I hear a response.  Hopefully, that will be in the next 24 hours or so.

    Regards,
    Daniel

  • Former Member
    0 Former Member

    Hi Cameron,

    Here is the explanation I received from one of our quality engineers.

    MTBF is the Mean Time Before Failure which is what you see with the MTBF/FIT estimator on the ti.com website. This is based upon HTOL data gathered by technology. MTTF is the Mean Time To Failure which is the average time to total failure of a whole population of devices – not something that’s practically measured as it requires a lot of data and time.

    With this in mind, do you know what exactly the customer is looking for?  Are they looking for what we would consider to be MTBF or something else?

    Regards,
    Daniel

  • Former Member
    0 Former Member

    Hi Cameron,

    Is this still a customer need?  If not, let me know and I can close out the thread.

    Regards,
    Daniel

  • 0 in reply to Former Member
    TI__Expert 5765 points

    Hey Daniel - haven't gotten a response yet. I'll close it and open a new one if needed! I appreciate the help. 

  • Former Member
    0 Former Member in reply to Cameron Perl

    Hey Cameron - Sure.  Sounds good and thank you for the update.

    Daniel