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August 20, 2025
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EEPROM Marking "Z531" orderable part number

  • August 20, 2025
  • 1 reply
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p5_0-1755709948637.png

Is anyone able to identify this TSSOP EEPROM from the package marking "Z531"?  I'm trying to determine an orderable part number.  Thanks.

Best answer by TDK

2903Y marking matches LM2903YDT--Low-power dual voltage comparator.

https://www.st.com/resource/en/datasheet/lm2903.pdf

 

How sure are you that this is EEPROM?

1 reply

TDK
TDKBest answer
Super User
August 20, 2025

2903Y marking matches LM2903YDT--Low-power dual voltage comparator.

https://www.st.com/resource/en/datasheet/lm2903.pdf

 

How sure are you that this is EEPROM?

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