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SN74LVC2G02-EP: Thermal Resistance

Jejomar Ildefonso
Expert 8380 points
Part Number: SN74LVC2G02-EP
Other Parts Discussed in Thread: SN74LVC07A-EP,

Hi Team,

Can we ask for the junction-to-case and junction-to-board thermal resistance value of SN74LVC2G02-EP and SN74LVC07A-EP?


Thanks in advance!


Kind Regards,

Jejomar

  • 0
    TI__Expert 3911 points

    Hi Jejomar,

    What are the OPN's the customer is using

    Regards,

    Owen

  • 0 in reply to Owen Westfall
    TI__Expert 8380 points

    Hi Owen,

    My apologies. OPNs in subject are the following:

    SN74LVC2G02MDCUREP

    SN74LVC07AMPWREP


    Kind Regards,

    Jejomar

  • 0 in reply to Jejomar Ildefonso
    TI__Expert 3911 points

    Hi Jejomar 

    These numbers aren't in our system I'm going to go ahead and request them, but given it's end of year and holiday season I imagine the wait time for getting these back will be extended likely 3-4 weeks.

    Regards,

    Owen

  • +1 in reply to Owen Westfall
    TI__Expert 3911 points

    Hi Jejomar,

    Turns out SN74LVC07AMPWREP was in the system under a different name so that is below

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

    		 145.2
    Result-Theta JC, top (standard datasheet value) 72.8
    Result-Theta JB (standard datasheet value) 87.0
    Result- Psi JT (standard datasheet value) 18.5
    Result- Psi JB (standard datasheet value) 86.5
    Result-Theta JC, bottom (standard datasheet value) n/a

    But SN74LVC2G02MDCUREP will need to be requested

    Regards,

    Owen

  • 0 in reply to Owen Westfall
    TI__Expert 8380 points

    Hi Owen,

    I understand. Thanks for the initial information for SN74LVC07AMPWREP.

    We'll pass this on to the customer and manage their expectations about the thermal information for SN74LVC2G02MDCUREP.


    Kind Regards,

    Jejomar

  • 0 in reply to Jejomar Ildefonso
    TI__Expert 8380 points

    Hi Owen,

    Just a minor follow-up query for SN74LVC07AMPWREP. The datasheet doesn't show information about its maximum junction temperature. But it seems that this FAQ shows that the device would also have a max junction temperature of 150°C. However, it's part of the absolute max ratings. Our customer wants to know the junction temperature range at which the device would remain functional and within spec. Typically it's 125°C for most devices. Would this be the case for SN74LVC07AMPWREP as well?


    Kind Regards,

    Jejomar

  • +1 in reply to Jejomar Ildefonso
    Guru 212070 points

    The recommended operating conditions already allow an ambient temperature of 125 °C, so the junction temperature must necessarily be higher.

    In the worst case, the junction temperature would be 125 °C + 113 °C/W × (24 mA × 0.55 V) ≈ 126.5 °C.

  • 0 in reply to Clemens Ladisch
    TI__Expert 8380 points

    Hi Clemens,

    Got it! Many thanks for your help!


    Hi Owen,

    The only awaiting request for now is the thermal information for SN74LVC2G02MDCUREP. We've already told the customer about the expected timeline. Thank you!


    Kind Regards,

    Jejomar

  • +1 in reply to Jejomar Ildefonso
    TI__Expert 3911 points

    Hi Jejomar,

    The request finished ahead of schedule the results for SN74LVC2G02MDCUREP are as follows

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

    201.5

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

    91.9

    Result-Theta JB (standard datasheet value):

    122.6

    Result- Psi JT (standard datasheet value):

    31.8

    Result- Psi JB (standard datasheet value):

    122.1

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

    n/a

    Regards,

    Owen