SI4707-B20 Datasheet, PDF (24/30 Pages) Silicon Laboratories – WEATHER BAND AND SAME DATA RECEIVER

Si4707-B20
9. Package Outline: Si4707 QFN
Figure 9 illustrates the package details for the Si4707. Table 13 lists the values for the dimensions shown in the
illustration.
Figure 9. 20-Pin Quad Flat No-Lead (QFN)
Table 13. Package Dimensions
Symbol
Millimeters
Symbol
Min
Nom
Max
A
0.50
0.55
0.60
f
A1
0.00
0.02
0.05
L
b
0.20
0.25
0.30
L1
c
0.27
0.32
0.37
aaa
D
3.00 BSC
bbb
D2
1.65
1.70
1.75
ccc
e
0.50 BSC
ddd
E
3.00 BSC
eee
E2
1.65
1.70
1.75
Notes:
1. All dimensions are shown in millimeters (mm) unless otherwise noted.
2. Dimensioning and tolerancing per ANSI Y14.5M-1994.
Min
0.35
0.00
—
—
—
—
—
Millimeters
Nom
2.53 BSC
0.40
—
—
—
—
—
—
Max
0.45
0.10
0.05
0.05
0.08
0.10
0.10
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