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SN74LVC1G98: Package thermal impedance for DRY package of SN74LVC1G98DRYR

kranthi Racha
Prodigy 160 points
Part Number: SN74LVC1G98
Other Parts Discussed in Thread: SN74LVC1G57

Hi,

We are using SN74LVC1G98DRYR in our design. we need Juction-to-Ambient/case  thermal impedence for "DRY" package. This is not given in the datasheet. can you please provide this information.

Thanks & Regards

Kranthi 

  • 0
    TI__Guru* 96591 points

    Hi Kranthi,

    I can submit a thermal modelling request to get these values for you, however the soonest I would expect results would be about 2 weeks (4/18).

    If you need something sooner, you can use the thermals from the SN74LVC1G57 for an initial estimate:

    I would expect that under normal operating conditions the thermal rise of this device would be extremely minimal, however if this estimate gives you reason for concern, we can submit the thermal request and get more precise values.

    If this resolves your question, please click the green "this resolves my issue" button -- if you would like me to submit the thermal request, please reply to this thread.

  • 0 in reply to Emrys Maier
    Prodigy 160 points

    Thanks for the reply,

    I will use the value you have shared for estimation. And wait for exact values from you.

    Thanks & Regards

    Kranthi

  • 0 in reply to kranthi Racha
    TI__Guru* 96591 points
    Thanks for getting back to me. I will submit the thermal request and we can expect results in about 2 weeks.
  • 0 in reply to Emrys Maier
    TI__Guru* 96591 points

    Hi Kranthi,

    Please see the below values:

    Result- Theta JA-High K (standard datasheet value):

    337.9
    Result-Theta JC, top (standard datasheet value):

    234.1
    Result-Theta JB (standard datasheet value):

    209.4
    Result- Psi JT (standard datasheet value):

    63.7
    Result- Psi JB (standard datasheet value):

    209.2
    Result-Theta JC, bottom (standard datasheet value):

    n/a