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M4T28-BR12SH6 bảng dữ liệu(PDF) 9 Page - STMicroelectronics

tên linh kiện M4T28-BR12SH6
Giải thích chi tiết về linh kiện  TIMEKEEPER짰 SNAPHAT짰 (battery and crystal)
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M4T28-BR12SH6 bảng dữ liệu(HTML) 9 Page - STMicroelectronics

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M4T28-BR12SH, M4T32-BR12SH
Mechanical information
9/16
4.1
Battery characteristics
Figure 3 on page 10 illustrates the lithium coin cell discharge rate for a given load. This
demonstrates the characteristically flat voltage level supplied by the battery until very near
the end of its life. These discharge levels have been greatly accelerated in comparison to
the normal, actual usage.
Note:
These batteries contain no mercury (Hg), cadmium (Cd), or lead (Pb).
4.2
UL recognition
The M4Txx-BR12SH has been recognized by Underwriters Laboratories under their
Component Recognition Program and carries U.L. File Number E89556.
4.3
Battery life
For information on data retention life and battery storage life, please refer to the application
note AN1012.
4.4
General notes
ST has conducted experiments using a manual press which determined that if
approximately 60 pounds of force is applied to the top of the SNAPHAT®, battery damage
and/or die cracks could be induced. As Figure 2 on page 8 specifies, only an average of less
than 13 force-pounds is required for proper insertion. We recommend that no more than 40
pounds of force be applied during SNAPHAT insertion.
If a manual press in employed, it is very important that it be calibrated such that it cannot
exceed this limit.
To remove the SNAPHAT top for replacement, a DIP/IC extractor tool should be used (see
Figure 4). The SNAPHAP top should be grabbed by the narrow end to avoid bending the
pins.
Caution:
To avoid draining battery do NOT place SNAPHAT pins into conductive foam.
Caution:
To avoid damaging SNAPHAT sockets do NOT wave solder SOIC.


Số phần tương tự - M4T28-BR12SH6

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