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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.