Package outline: si4734/35 qfn, Figure 14. 20-pin quad flat no-lead (qfn), Table 16. package dimensions – Silicon Laboratories SI4734/35-B20 User Manual
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9. Package Outline: Si4734/35 QFN
Figure 14 illustrates the package details for the Si4734/35. Table 16 lists the values for the dimensions shown in
the illustration.
Figure 14. 20-Pin Quad Flat No-Lead (QFN)
Table 16. Package Dimensions
Symbol
Millimeters
Symbol
Millimeters
Min
Nom
Max
Min
Nom
Max
A
0.50
0.55
0.60
f
2.53 BSC
A1
0.00
0.02
0.05
L
0.35
0.40
0.45
b
0.20
0.25
0.30
L1
0.00
—
0.10
c
0.27
0.32
0.37
aaa
—
—
0.05
D
3.00 BSC
bbb
—
—
0.05
D2
1.65
1.70
1.75
ccc
—
—
0.08
e
0.50 BSC
ddd
—
—
0.10
E
3.00 BSC
eee
—
—
0.10
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.