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DS125BR111: DS125BR111RTWR RELIABILITY/QUAL CLARIFICATION

trace karnitz
Prodigy 35 points
Part Number: DS125BR111

Hello, 

I'm looking at the data for DS125BR111RTWR. I see that the part is rated only to -40°C for low operating/storage temperature. This part was apparently tested to -65°C during temperature cycling. I had two questions here: 
1) in one of the row it says  "Temperature cycle -65/150C ..... Or equivalent JEDEC condition", would this be considered test condition "C" since that is its equivalent. I just want to verify what testing was done and that it isn't something less than what is is the conditions column


2) Is there any reason why this part couldn't be stored at a lower temperature than the -40°C. Such as material expansion differences, some internal construction that would fail, anything? If the part has been temperature cycled to -65°C I'd figure I could use some engineering judgement and say it could be stored lower.

Thank you,

Trace

  • 0
    TI__Mastermind 27640 points

    Hi Trace,

    Quality testing pushes the device beyond datasheet recommended limits. We recommend staying within the datasheet specifications to guarantee the device will operate will operate as expected and not risk damage.

    Best,

    Lucas

  • 0
    Prodigy 35 points

    Hello Lucas,

    Understandable. I'm still curious about question 1) though. When TI puts "Or equivalent JEDEC condition" does that mean that they would deviate at all from what is listed in the "Condition" column?
    https://www.ti.com/quality-reliability-packaging-download/report?opn=DS125BR111RTWR

    So is the testing always going to be -65/150C or better or is there room for deviations due to the "Notes" column? I'm just trying to make sure that the part has actually been tested to the -65/150C condition. I just don't understand why the note would be there, if someone wanted to compare to the JEDEC standard couldn't they just look it up and see what -65/150C corresponds to. The way its worded now its slightly ambiguous.

    Thank you,

    Trace

  • 0 in reply to trace karnitz
    TI__Mastermind 27640 points

    Hi Trace,

    I expect that the testing was always performed across temperature cycle -65/150C or better. The note "Or equivalent JEDEC condition" is likely pointing out that there is some flexibility with other testing parameters within JESD22-A104 Test Condition C.

    Best,

    Lucas