EFM8SB2 Datasheet, PDF (43/49 Pages) Silicon Laboratories – The EFM8SB2 highlighted features are listed below

9. QFP32 Package Specifications
9.1 QFP32 Package Dimensions
EFM8SB2 Data Sheet
QFP32 Package Specifications
Figure 9.1. QFP32 Package Drawing
Table 9.1. QFP32 Package Dimensions
Dimension
A
A1
A2
b
D
D1
e
E
E1
L
aaa
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Min
—
0.05
1.35
0.30
0.45
Typ
—
—
1.40
0.37
9.00 BSC
7.00 BSC
0.80 BSC
9.00 BSC
7.00 BSC
0.60
0.20
Max
1.60
0.15
1.45
0.45
0.75
Rev. 1.1 | 42