m41t81s STMicroelectronics, m41t81s Datasheet - Page 27

• Manufacturer Part Number: m41t81s
• Description: Serial Access Real-time Clock With Alarms
• Manufacturer: STMicroelectronics

6
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 18. SO8 – 8-lead plastic small package outline
Drawing is not to scale.
Table 14.
mechanical data
Symb
ccc
A1
A2
E1
L1
A
D
E
b
c
e
h
k
L
SO8 – 8-lead plastic small outline (150 mils body width), package
A2
4.90
6.00
3.90
1.27
1.04
Typ
b
8
1
e
D
0.10
1.25
0.28
0.17
4.80
5.80
3.80
0.25
0.40
mm
Min
0°
E1
A
E
ccc
0.127
Max
1.75
0.25
0.48
0.23
0.10
5.00
6.20
4.00
0.50
8°
A1
0.193
0.236
0.154
0.050
0.041
Typ
L1
L
inches
0.004
0.049
0.011
0.007
0.189
0.228
0.150
0.010
0.016
Min
GAUGE PLANE
0°
h x 45˚
0.25 mm
c
k
0.069
0.010
0.019
0.009
0.004
0.197
0.244
0.157
0.020
0.050
Max
SO-A
8°
®
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