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LM7171QML-SP: Radiation, SEL for LM7171QML-SP

Jason Rim
Prodigy 20 points
Part Number: LM7171QML-SP
Other Parts Discussed in Thread: LM7171

Tool/software:

Radiation, SEL (MeV x cm2/mg) for LM7171QML-SP is "bipolar". What does it mean? Does it mean it is immune to SEE/SEL and T.I. does not have test data for LM7171QML-SP? 

  • 0
    TI__Genius 14221 points

    Hello Jason,

    I am not sure I understand your question or the "bipolar" note you are referring to in your response.  Could you clarify and elaborate on what you need regarding LM7171QML-SP?  What are they key careabouts for your design?

    Best,
    Alec

  • 0 in reply to Alec Saebeler
    Prodigy 20 points

    Hi, 

    If you go to Parameters page of LM7171QML-SP, I read 

    Radiation, SEL (MeV·cm2/mg)       Bipolar

    www.ti.com/.../LM7171QML-SP

    I am trying to understand why "Bipolar" is mentioned instead of a SEL (MeV·cm2/mg) value. Because LM7171 is a bipolar device and is less susceptible to SEL? I see TID spec but no SEL spec. 

  • 0 in reply to Jason Rim
    TI__Genius 14221 points

    Hello Jason,

    I better understand now, I was looking for bipolar in the datasheet, not the product page.

    Here are my thoughts:

    1. You can refer to the radiation testing report under the "Technical Documentation" section of the product page for the data you need.

    2. The use of 'bipolar' in the parametric table is possibly just to differentiate FET parts from bipolar ones, as FET parts tend to be more susceptible.  The radiation test report and results are more important than this term and line-item.  I imagine this is for searchability or just organizational.

    I would suggest reviewing the radiation testing report for the LM7171 space grade.

    Best,

    Alec

  • 0 in reply to Alec Saebeler
    Prodigy 20 points

    Thank you very much!