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Daisy chain ICs (die / chip) for sale?

John Masnik1
Prodigy 30 points

Does TI sell flip-chip, daisy-chain die (chip, IC) that can be used to check continuity and assembled for Coefficient-of-Thermal-Expansion testing (preferably with 63/37 SnPb bumps)?
Page 9 of your document at
www.ti.com/.../spraa99b.pdf
states “Texas Instruments offers daisy-chained units in all production nFBGA packages.” However, I’m unable to find them on the ti.com website. I'm only interested in the flip-chip die (chip, IC), not the entire package. If you do offer them, would you please give me more information (including pricing and minimum order quantities)?
Sincerely, John Masnik

  • 0
    TI__Guru 71526 points

    Hello John,

      Please review the Die & Wafer Products on this page: https://www.ti.com/die-wafer-services/products.html . 

    As indicated on the Overview page, the Authorized Distributor for die sales is Micross, please use the link provided on that page to obtain ordering information. 

    At your service,

    ~Leonard   

  • 0 in reply to LeonardEllis
    Prodigy 30 points

    There is no daisy chain die on your Die & Wafer Products webpage.  So, they are no longer offered, if they ever were.  Thanks.

  • 0 in reply to John Masnik1
    TI__Guru 71526 points

    Hello John,

    As you highlighted in the text from page 9 of the App Note: 

    “Texas Instruments offers daisy-chained units in all production nFBGA packages.” ,

    Since you are asking about die, I don't see where this daisy-chain feature would apply, correct?  I have asked some experts on die and will update this if I find out anything different.   

    Regards,

    ~Leonard  

  • 0 in reply to LeonardEllis
    Prodigy 30 points

    Hi Leonard,

    Thanks for your reply.  I'm not sure I understand your statement "I don't see where this (die) daisy-chain feature would apply?"  You're correct that the reference I gave that “Texas Instruments offers daisy-chained units in all production nFBGA packages” does not mention a die.  However, it depends how the daisy-chain package is made.  The daisy chain package could only be a package or may also contain a die.  If it contains a die, the die may be a dummy die (electrically inactive) or electrically active (the daisy chain weaves between the die and package).  I don't know which is the case for the TI daisy-chain nFBGAs, which is why I was looking for a description (and ultimately, if it's for sale).  As I was unable to find any daisy-chain product on ti.com for reliability testing, I realized it probably is not offered.  I contacted your support, however, on the long-shot that all your catalog is not on your website.  Thanks again for looking into this matter.

    John

  • 0 in reply to John Masnik1
    TI__Guru 71526 points

    Hi Robert,

      As you suggested, daisy-chain products are not available. I hope you can find products for your design through Micross.

    Regards,

    ~Leonard