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TSS721A: TSS721ADR

Eileen Ai
Prodigy 10 points
Part Number: TSS721A

Tool/software:

Hello  Dears

Regarding Part number : TSS721ADR  Current DC:2339+  COO :TW 

After check we found marking & X-ray format does not match history and we didn’t find any PCN about marking & X-ray

For now are having left one X-RAY , right one is old history  


Could you help to check  what is the reason  here?

Looking forward to y our reply~

Thank you~

  • 0
    TI__Guru 65862 points

    Eileen,

    Can you share the topside of the old and new devices? There have been 2 different PCNs for this device since 2012: one for the mold compound, and one for the topside marking. The mold compound could change the leadframe assembly, but we'll need to see the date codes of both devices before we know for sure what could be the reason for the different leadframe.

    One thing to note, though the internal leadframe structure is different, the function and characterization of the device remains the same. 

    Regards,

    Eric Hackett 

  • 0 in reply to Eric Hackett
    Prodigy 10 points

    Hello  Eric

    Thanks for your reply~

    Pls check following photo

    Details :TSS721ADR  DC 2339+ COO :TW

    Details :TSS721ADR DC2221+ COO :TW

    Looking forward to your reply~

    Thank you~

    Eileen 

  • 0 in reply to Eileen Ai
    TI__Guru 65862 points

    Eileen,

    Based on the topside markings, the old device is from 2012, while the new is from 2013, does that make sense based on the customer order history? If so, the difference is due to the mold compound change in the end of 2012. Again, when these kinds of changes occur, the device is verified that no specified parameters or functions change before it is fully released. 

    Please let us know if you have any other questions.

    Regards,

    Eric Hackett 

  • 0 in reply to Eileen Ai
    Prodigy 10 points

    Hi Eric,

    can you help confirm whether it is normal to have two different marking format in this part no?

    Thanks.

  • 0 in reply to Eric Hackett
    Prodigy 70 points

    Hi Eric,

    We found a PCN have mentioned the top marking have been changed. but the document content not including of this part number.

    Since from 22+ to 23+ top marking are different format/logo ,is it normal and possible in this case?

  • 0 in reply to Eric Hackett
    Prodigy 10 points

    Hi Eric,

    Although changes in mold compound are mentioned, we also need to ask about changes in marking format.

    Can you help confirm whether it is normal to have two different marking format in this part no?

    Looking forward to your reply~

    Thanks.

  • +1 in reply to Eileen Ai
    TI__Guru 65862 points

    Eileen, Jimmy,

    Yes, there was also a PCN to change the topside marking of this device that happened in 2022. So yes, this is normal.

    Regards,

    Eric Hackett 

  • 0 in reply to Eric Hackett
    Prodigy 10 points

    okay， thanks for your help!