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SMD Device Marking Code

Discussion in 'Datasheets, Manuals and Component Identification' started by davidge, Sep 2, 2011.

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  1. davidge

    davidge

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    Sep 2, 2011
    Does anyone know what is the device that has marking "LAC" on it? It is SOT23-5 package.

    Thanks,
    David
     
  2. OLIVE2222

    OLIVE2222

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    Oct 2, 2011
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    My information suggests is could also be an RP171N591B (5.9V 150mA)

    http://www.dz863.com/datasheet-8205207663-RP171N591B_150ma-10v-Input-Ldo-Regulator/

    or even an XC6219A432MR, which is a 4.3V 240mA reg. It's also on an sot-25 package which appears to be similar...

    Since they're all LDO regulators, you can probably get a good indication of which is the most likely from the input voltage. ...And from the way they are connected in the circuit.
     
  4. OLIVE2222

    OLIVE2222

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    Oct 2, 2011
    Hi,


    The RP171N591B as a 5 digits marking. LAC + 2 digit for the lot number
    The XC6219A432MR as a 4 digits marking.1 L digit marking for the product serie + 2 digits for the voltage + 1 digit for the lot number.

    cheers,
    Olivier
     
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Your information sounds better than mine :)

    What is your source?
     
  6. OLIVE2222

    OLIVE2222

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    Oct 2, 2011
  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    No, what I meant was, what is your source for the cross-reference information between case markings and devices?
     
  8. OLIVE2222

    OLIVE2222

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    Oct 2, 2011
    Steve,

    misunderstanding on my side. In fact I just Google it. With LAC SOT23 query it's the second result. I find this is better than dedicated tools as it also drill inside datasheets and it's more up to date. But at the end you find more candidates than me ! :)

    Olivier
     
  9. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    I should add that to the sticky thread!

    Thanks
     
  10. OLIVE2222

    OLIVE2222

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    Oct 2, 2011
    Sure, it will help to promote this Californian start up company :D
     
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