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    M4T28-BR12SH1

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    SNAPHAT® 48 mAh lithium coin cell battery with crystal
    Learn More about M4T28-BR12SH1

    Quantity $ per Unit Savings
    1 - 9$8.760%
    10 - 20$7.9210%
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    Parameter NameParameter Value
    Operating RangeCommercial
    Operating Temp Min Celsius0.0
    Operating Temp Max Celsius70.0
    ECCN USEAR99
    ECCN EUNEC
    Packing TypeTube
    RoHs compliantEcopack1
    GradeIndustrial
    Package Name1225 SNAPHAT

    The M4Txx-BR12SH SNAPHAT®top is a detachable lithium power source for ST’s serial real-time clock and non-volatile TIMEKEEPER®surface-mount SOIC package (28- and 44-pin).


    The SNAPHAT top contains both the battery and crystal and is designed to be “snapped on” after the SOIC is surface mounted on the PC board. Thus the two-piece solution prevents the battery and crystal from being exposed to the high temperatures of the surface-mount process.

    Key features
    • Provides battery backup power for serial real-time clock, non-volatile TIMEKEEPER®and supervisor devices in the 28- or 44-pin SNAPHAT®SOIC package
    • Removable battery avoids heat associated with surface-mount process
    • Snaps directly onto surface-mounted SNAPHAT SOIC
    • Choice of battery capacities
      • M4T28-BR12SH = 48 mAh
      • M4T32-BR12SH = 120 mAh
    • Keyed insertion to ensure proper assembly
    • Removable for replacement and proper disposal
    • Pb-free package
    • Available in Ecopack®packages, tubes