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SN74AVC4T234: Request for thermal resistance Information for Junction-to-case (θJc)

Jonathan Geronga
Expert 7930 points
Part Number: SN74AVC4T234
Other Parts Discussed in Thread: SN74AXC4T245

Hi Team,

Our customer is requesting for the Junction-to-case (θJc) thermal resistance value of SN74AVC4T234ZSUR.
Please let me know if you can share this. We would appreciate it if you could also share all the thermal resistance information since the value available in the datasheet is only the θJA.

Thanks!

Jonathan

  • 0
    TI__Guru 55980 points

    Hi Jonathan,

    Let me look into the thermal values of the AVC4T234.

    I would recommend switching from the AVC4T234ZSU package to SN74AXC4T245. Is this possible for the customer?

  • 0 in reply to ShreyasRao
    TI__Guru 55980 points

    Jonathan,

    I could find the thermal values as below:

    all values in oC/W

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

    165.9

    Result-Theta JC, top (standard datasheet value)

    123.8

    Result-Theta JB (standard datasheet value)

    123.2

    Result- Psi JT (standard datasheet value)

    4.4

    Result- Psi JB (standard datasheet value)

    122.9

    Result-Theta JC, bottom (standard datasheet value)

     na