m41t256y STMicroelectronics, m41t256y Datasheet - Page 26

• Manufacturer Part Number: m41t256y
• Description: 256 Kbit 32k X8 Serial Rtc
• Manufacturer: STMicroelectronics

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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 15. SOH44 – 44-lead plastic small outline, SNAPHAT, package outline
Drawing is not to scale.
Table 11.
Symb
CP
A1
A2
eB
C
D
H
N
A
B
E
e
L
a
SOH44 – 44-lead plastic small outline, SNAPHAT, package mech. data
B
0.81
Typ
SOH-A
N
1
e
D
17.71
11.51
0.05
2.34
0.36
0.15
8.23
3.20
0.41
mm
Min
44
0°
–
A2
E
H
CP
18.49
12.70
3.05
0.36
2.69
0.46
0.32
8.89
3.61
1.27
0.10
Max
8°
–
A
eB
0.032
Typ
A1
L
C
inches
0.002
0.092
0.014
0.006
0.697
0.324
0.126
0.453
0.016
Min
44
0°
–
0.120
0.014
0.106
0.018
0.012
0.728
0.350
0.142
0.500
0.050
0.004
Max
®
8°
–