Part Markings for M4T28-BR12SH1

Here is a breakdown of the part markings for M4T28-BR12SH1:

  • 1st Line - This is internal MFG information
  • 2nd Line - MFG Part Number
  • 3rd Line - IC Family
  • 4th Line - Battery and Crystal Package
  • 5th Line - Battery Type
  • 6th Line - This line contains some internal information in the first 5 characters but the date code can be found in the last 3 characters. Using the example: aa bbb 301. The format for this date is as follows: The first number is the last digit of production year. The final 2 numbers are the calendar week of that year. For this marking, the date code would be the first week of 2023.

If you want a full breakdown of this directly from STMicroelectronics, click HERE.


 

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MFR PART # M4T28-BR12SH1
DIGIKEY PART # 497-3686-5-ND
MANUFACTURER STMicroelectronics
DESCRIPTION SNAPHAT BATT/CRYSTAL FOR SOIC
DATASHEET Click Here