EFM8BB2 Datasheet, PDF (49/55 Pages) Silicon Laboratories – The EFM8BB2 highlighted features are listed below

EFM8BB2 Data Sheet
QFN20 Package Specifications
Dimension
Min
Typ
Max
E
3.00 BSC
E2
1.60
1.70
1.80
f
2.50 BSC
L
0.30
0.40
0.50
K
0.25 REF
R
0.09
0.125
0.15
aaa
0.15
bbb
0.10
ccc
0.10
ddd
0.05
eee
0.08
fff
0.10
Note:
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. Dimensioning and Tolerancing per ANSI Y14.5M-1994.
3. The drawing complies with JEDEC MO-220.
4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.
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