STLD20D

7/8

Figure 9: QFN 3x3 8L Package Mechanical Data

Figure 10: QFN Foot Print Dimensions

(in millimeters)

L2

D1

A

A1

b1

L

E2

L1

D2

r

r1

k

b

e

A2

A3

L2

E

0.41

0.39

4.00

4.00

2.02

0.65

1.21

0.34

- Exposed pad is not connected to the ground of the dice.

- Connect exposed pad to pin one.

REF.

DIMENSIONS

Millimeters

Inches

Min.

Typ.

Max.

Min.

Typ.

Max.

A

0.80

0.90

1.00

0.031 0.035 0.039

A1

0.03

0.03

0.001 0.002

A2

0.65

0.70

0.75

0.026 0.028 0.030

A3

0.15

0.20

0.25

0.006 0.008 0.010

b

0.29

0.31

0.39

0.011 0.012 0.015

b1

0.17

0.30

0.007

0.012

D

3.00

0.118

D2

1.92

2.02

2.12

0.076 0.079 0.083

E

3.00

0.118

E2

1.11

1.21

1.31

0.044 0.048 0.051

e

0.65

0.026

K

0.20

0.008

L

0.20

0.29

0.45

0.008 0.011 0.018

L1

0.16

0.24

0.40

0.006 0.009 0.016

L2

0.13

0.005

r

0.15

0.006

r1

0.15

0.006