ST2189

Package information

Doc ID 15918 Rev 1

17/21

Figure 9.

Footprint recommendation for QFN20 (1.8 x 3.2 x 0.5 mm) - pitch 0.4 mm

Table 13.

Mechanical data for QFN20 (1.8 x 3.2 x 0.5 mm) - pitch 0.4 mm

Symbol

Milimeters

Nom

Min

Max

A

0.50

0.45

0.55

A1

0.02

0

0.05

A3

0.127

-

-

b

0.20

0.15

0.25

D

3.20

3.15

3.25

E

1.80

1.75

1.85

e0.40

-

-

L

0.40

0.35

0.45