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