SI7015-A20 Datasheet, PDF (33/39 Pages) Silicon Laboratories – DIGITAL IC HUMIDITY AND TEMPERATURE SENSOR

Si7015-A20
9.2. 24-Pin QFN with Protective Cover
Figure 9 illustrates the package details for the Si7015 with the optional protective cover. Tables 25 and 26 list the
values for the dimensions shown in the illustration. There are two package variants with slightly different height
dimensions. The two package variants are otherwise interchangeable.
Figure 9. 24-Pin Quad Flat No Lead (QFN) With Protective Cover
Table 25. 24-Pin Package Diagram Dimensions
Dimension
Min
Nom
Max Dimension
Min
Nom
Max
A1
0.00
0.02
0.05
h
0.76
0.83
0.90
b
0.18
025
0.30
L
0.30
0.35
0.40
D
4.00 BSC.
R1
0.45
0.50
0.55
D2
2.55
2.65
2.75
aaa
—
—
0.15
e
0.50 BSC.
bbb
—
—
0.15
E
4.00 BSC.
ccc
—
—
0.08
E2
2.55
2.65
2.75
ddd
—
—
0.10
F1
3.70
3.80
3.90
F2
3.70
3.80
3.90
Notes:
1. Dimensioning and Tolerancing per ANSI Y14.5M-1994.
2. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
Table 26. Package Variants
Variant A
Dimension
Min
Nom
Max
A
—
1.27
1.41
A2
0.80
0.90
1.00
Variant B
Min
Nom
Max
—
1.07
1.21
0.70
0.75
0.80
Note: All Dimensions are in mm unless otherwise noted.
Rev. 1.0
33