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Original question:

ESDS452: ESDS452 SPICE models

ESDS452: ESDS452 8/20µs surge current @ 80°C

Pierre Demouveaux
Prodigy 20 points
Part Number: ESDS452

Tool/software:

Hi again,

The ESDS452 datasheet doesn't specify the temperature derating for the IEEE 61000-4-5 (8/20µs) max surge current.
(It is only given as 18A @ 25°C.)


Is there any data relative to the max 8/20µs surge current at 80°C (or close to 80°C) ?

Thanks in advance!

  • 0
    TI__Expert 8400 points

    Hi Pierre, 

    We do not have any surge data across temperature for this device. Is there a reason for 80C being needed? I would expect the clamping voltage to increase at a higher temperature but should only be by a few volts. 

    Best,

    McKenzie

  • 0 in reply to McKenzie Eaker
    Prodigy 20 points

    Usually, the 8/20µs waveform max current specification decreases with temperature.

    For these small TVS in SOD123 or SOT23 package, the spec around 80°C is usually about half the 25°C value.

    The reason for the 80°C request : 80°C is the upper limit of the temperature range for most of our products (it can be higher on some specific products).
    TVS are dimmensionned for the worst case scenario.

  • 0 in reply to Pierre Demouveaux
    Prodigy 20 points

    BTW, my request was for the max current, not the clamping voltage. Sorry if my question was not clear.

  • 0 in reply to Pierre Demouveaux
    TI__Expert 6090 points

    Hi Pierre,

    As McKenzie mentioned, we do not have this information on hand, but I will look to see if we have feasibility to test this. Please give me until the end of the week to confirm this.

    Understood that the request is related to max Ipp, not clamping voltage.

    Best Regards,

    Josh Prushing

  • 0 in reply to Josh Prushing
    Prodigy 20 points

    Hi McKenzie & Josh,

    thanks for the quick replies.

    I imagine that those tests would also provide, as a side effect, the clamping voltage at higher temperatures.
    This info is valuable too, especially if it it happens to change by more than 15 or 20%. relative to the 25°C value.

    Best Regards, Pierre D.