M4T28-BR12SH1

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SNAPHAT® 48 mAh lithium coin cell battery with crystal

Quantity $ per Unit Savings
1 - 9$8.760%
10 - 20$7.9210%
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Out of stock
$8.76
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