M4T28-BR12SH1 STMicroelectronics, M4T28-BR12SH1 Datasheet - Page 11

• Manufacturer Part Number: M4T28-BR12SH1
• Description: IC SNAPHAT BATT/CRYSTAL 28-SOIC
• Manufacturer: STMicroelectronics

Specifications of M4T28-BR12SH1

• Battery Type: Li-(CF)
• Operating Supply Voltage: 0 V to 2.8 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Ic Function: Timekeeper (Battery & Crystal)
• Supply Voltage Range: 2.8V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: SNAPHAT
• No. Of Pins: 28
• Termination Type: SMD
• Rohs Compliant: Yes
• Filter Terminals: SMD
• External Depth: 14.99mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3686-5

M4T28-BR12SH, M4T32-BR12SH
5
Note:
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. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 5.
Drawing is not to scale.
Table 4.
Symb
A1
A2
A3
eA
eB
A
B
D
E
L
SH – 4-pin SNAPHAT
outline
SH – 4-pin SNAPHAT
mechanical data
Typ
21.21
14.22
15.55
6.73
6.48
0.46
3.20
2.03
mm
Min
eA
D
®
®
housing for 48 mAh battery & crystal, package
housing for 48 mAh battery & crystal, package
21.84
14.99
15.95
Max
9.78
7.24
6.99
0.38
0.56
3.61
2.29
A1
E
A
Typ
B
Package mechanical data
eB
SHTK-A
inches
0.265
0.255
0.018
0.835
0.560
0.612
0.126
0.080
Min
A3
L
A2
0.385
0.285
0.275
0.015
0.022
0.860
0.590
0.628
0.142
0.090
Max
®
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