M4T32-BR12SH1 STMicroelectronics, M4T32-BR12SH1 Datasheet
M4T32-BR12SH1
Specifications of M4T32-BR12SH1
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M4T32-BR12SH1 Summary of contents
Page 1
... 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 ® ...
Page 2
... M4T28-BR12SH, M4T32-BR12SH 1 Description The M4TXX-BR12SH SNAPHAT volatile TIMEKEEPER 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 ...
Page 3
... Table 2. Absolute maximum ratings Symbol T Ambient operating temperature A T STG 1. Only the M4T32-BR12SH is available in industrial temperature (grade 6). Caution: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets. 6/16 Parameter Storage temperature (V off, oscillator off) CC M4T28-BR12SH, M4T32-BR12SH ...
Page 4
... M4T28-BR12SH, M4T32-BR12SH 3 DC and AC parameters This section summarizes the operating and measurement conditions, as well as the DC and AC characteristics of the device. The parameters in the following DC and AC characteristic tables are derived from tests performed under the measurement conditions listed in the relevant tables. Designers should check that the operating conditions in their projects match the measurement conditions when using the quoted parameters ...
Page 5
... M4T28-BR12SH, M4T32-BR12SH 4.1 Battery characteristics Figure 3 on page 10 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). ...
Page 6
... M4T28-BR12SH, M4T32-BR12SH 5 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label ...
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... Typ Min Max 10.54 8.00 8.51 7.24 8.00 0.38 0.46 0.56 21.21 21.84 17.27 18.03 15.55 15.95 3.20 3.61 2.03 2.29 M4T28-BR12SH, M4T32-BR12SH SHTK-A inches Typ Min 0.315 0.285 0.018 0.835 0.680 0.612 0.126 0.080 A2 Max 0.415 0.335 0.315 ...
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... Example: Device type M4T Battery voltage and capacity 28-BR12 = BR1225 mAh 32-BR12 = BR1632 120 mAh Package ® SNAPHAT Temperature range 70° –40 to 85°C (M4T32-BR12SH only) Shipping method ® blank = Ecopack package, tubes ® Ecopack package, tape & reel M4T 28-BR12 SH ...