m48t18 STMicroelectronics, m48t18 Datasheet - Page 23

• Manufacturer Part Number: m48t18
• Description: 5v, 64kbit 8 Kb X 8 Timekeeper Sram
• Manufacturer: STMicroelectronics

Package mechanical data
Note:
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 13. PCDIP28 – 28-pin plastic DIP, battery CAPHAT, package outline
Drawing is not to scale.
Table 12.
Symb
A1
A2
B1
eA
e1
e3
A
B
C
D
E
N
L
PCDIP28 – 28-pin plastic DIP, battery CAPHAT, package mechanical data
Typ
B1
N
1
39.37
17.83
29.72
15.24
8.89
0.38
8.38
0.38
1.14
0.20
2.29
3.05
mm
Min
28
e3
D
B
e1
A1
39.88
18.34
36.32
16.00
Max
9.65
0.76
8.89
0.53
1.78
0.31
2.79
3.81
A2
E
A
L
Typ
eA
PCDIP
inches
0.350
0.015
0.330
0.015
0.045
0.008
1.550
0.702
0.090
1.170
0.600
0.120
Min
C
28
0.380
0.030
0.350
0.021
0.070
0.012
1.570
0.722
0.110
1.430
0.630
0.150
Max
23/30