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tkuo
Associate
September 6, 2023
Solved

Date code of M41T62LC6F

Hi, how to read the date code marking on M41T62LC6F.

Example attached: 231C4

Thanks, 

 

This topic has been closed for replies.
Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
September 7, 2023

@tkuo The RTC M41T62LC6F has been set to NRND (not recommended for new designs) and will soon be obsoleted. However, the characters in the second line, 231C4 in your case, can be interpreted as follows:

  • 2 = last digit of the year of manufacture (as the RTC was launched in 2003, your "2" can therefore stand for 2012 or 2022)
  • 31 = calendar week of the year of manufacture
  • C4 = lot number (internal)

Hope that helps?

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
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6 replies

Issamos
Issamos
Super User
September 7, 2023

Hello @tkuo 

This code is personal to ST products. I think it means lot C4 of 2012 or 2022 week 31.

Best regards.

II

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
September 7, 2023

@tkuo The RTC M41T62LC6F has been set to NRND (not recommended for new designs) and will soon be obsoleted. However, the characters in the second line, 231C4 in your case, can be interpreted as follows:

  • 2 = last digit of the year of manufacture (as the RTC was launched in 2003, your "2" can therefore stand for 2012 or 2022)
  • 31 = calendar week of the year of manufacture
  • C4 = lot number (internal)

Hope that helps?

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    Issamos
    Issamos
    Super User
    September 7, 2023

    Hello @Peter BENSCH 

    thank you for correcting my answer.

    Best regards.

    II

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