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speranskyanton's avatar
speranskyanton
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4 months ago

EP1K50QI208-2N

Hello!
Could you please advise whether the marking structure on the EP1K50QI208-2N components — which have been discontinued for a long time — matches the one shown in the attached photo, particularly the format of the date code (week of manufacture)?
I would be extremely grateful for a prompt response, and I would also appreciate it if you could share any available documentation on the marking system for the ACEX 1K series.

Thank you very much in advance!

Fpga Devkit

14 Replies

    • speranskyanton's avatar
      speranskyanton
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      4 months ago

      Hello!
      Apologies — I’m attaching the photos now.
      Photo marking shows the marking of a chip from a different series, but in all available documentation, the week of production is indicated using specific symbols.
      Is it possible that on older components the production week could be marked simply as, for example, “20”?
      Thank you!

  • FvM's avatar
    FvM
    Icon for Super Contributor rankSuper Contributor
    4 months ago

    Hi,

    not sure what you want to achieve, but I can confirm that ACEX 1K series used similar marking with YYWW date code, e.g. below 0125.


    • speranskyanton's avatar
      speranskyanton
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      4 months ago

      Hello!
      Thank you!
      Here is an example: a photo of a component with the date code “1721”.
      In the current marking format, “21” does not appear to be a valid week code.
      Was it common in older marking formats for the production week to be represented by any symbols, such as “21”?

      • FvM's avatar
        FvM
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        4 months ago
        Hi
        "In the current marking format, “21” does not appear to be a valid week code." What else?
  • FvM's avatar
    FvM
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    4 months ago

    Hi,

    as far as I see, the date code format didn't change between 2001 and today. 1721 should be 2017 week 21. Any indications that it doesn't fit?

    • speranskyanton's avatar
      speranskyanton
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      4 months ago

      Hello!
      Thank you!
      So, in earlier markings, could any production week number be present, rather than only specific codes?

  • FakhrulA_altera's avatar
    FakhrulA_altera
    Icon for Regular Contributor rankRegular Contributor
    4 months ago

    Hi speranskyanton,


    Yes, as FVM mentioned:

    The date code on the top marking of the Altera EP1K50 chip follows the standard YYWW format:

    • The first two digits represent the year of manufacture (17 = 2017).
    • The last two digits represent the work week within that year (21 = week 21).

    So, a date code of 1721 means the device was manufactured in week 21 of 2017.


    I tried to find official documentation specific to FLEX 10K devices, but could not locate a direct reference. The closest available documentation is the Product Marking Information for MAX® II, MAX® V Devices (https://cdrdv2-public.intel.com/732570/product-marking-information-max-ii-and-max-v.pdf), which uses the same YYWW format for date codes. Altera has generally applied this format consistently across their product families.


    Regards,

    Fakhrul




  • FakhrulA_altera's avatar
    FakhrulA_altera
    Icon for Regular Contributor rankRegular Contributor
    4 months ago

    As we haven't received a response to our previous notification, this thread will be transitioned to community support. We hope all your concerns have been addressed. If you have any new questions, please feel free to open a new thread to receive support from Intel experts. Otherwise, community users will continue to assist you here. Thank you.


    • speranskyanton's avatar
      speranskyanton
      Icon for Occasional Contributor rankOccasional Contributor
      3 months ago

      Hello!
      Returning to this question — is it possible that the lot code in the marking is positioned so close to the main marking (closer to the center)?
      Please reply as soon as possible.
      Thank you!

  • FvM's avatar
    FvM
    Icon for Super Contributor rankSuper Contributor
    3 months ago

    Hi,

    what do you specifically want to know? Have you obtained the devices from grey market and want to find out if they might be counterfeit?

    Altera/Intel is supporting questions regarding part quality only for devices delivered by authorized distributors. Shown production date fits ACEX 1K last buy period according to PDN1619, so it's at least well possible that you have genuine Altera parts.

    Personally I haven't yet seen the questioned marking layout with any Altera product, but that doesn't mean much. Didn't use ACEX 1K after 2001.

    Regards
    Frank