EFM8SB1 Datasheet, PDF (44/55 Pages) Silicon Laboratories – The EFM8SB1 highlighted features are listed below

9. QFN24 Package Specifications
9.1 QFN24 Package Dimensions
EFM8SB1 Data Sheet
QFN24 Package Specifications
Dimension
A
A1
b
D
D2
e
E
E2
L
aaa
bbb
ccc
ddd
Figure 9.1. QFN24 Package Drawing
Table 9.1. QFN24 Package Dimensions
Min
Typ
0.70
0.75
0.00
—
0.18
0.25
3.90
4.00
2.60
2.70
0.50 BSC
3.90
4.00
2.60
2.70
0.35
0.40
—
—
—
—
—
—
—
—
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Max
0.80
0.05
0.30
4.10
2.80
4.10
2.80
0.45
0.10
0.10
0.08
0.10
Rev. 1.2 | 43