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Revision 1.02

18 - 20

AS1539/AS1541

Data Sheet - P a c k age Drawin gs an d Ma rkings

Figure 31. TQFN 4x4 16-pin Package

Notes:

1. Dimensioning and tolerancing conform to ASME Y14.5M-1994.

2. All dimensions are in millimeters, angle is in degrees.

3. N is the total number of terminals.

4. Terminal #1 identifier and terminal numbering convention shall conform to JESD 95-1 SPP-012. Details of ter-

minal #1 identifier are optional, but must be located within the area indicated. The terminal #1 identifier may be

either a mold, embedded metal or mark feature.

5. Dimension b applies to metallized terminal and is measured between 0.15 and 0.30mm from terminal tip.

6. ND refers to the maximum number of terminals on D side.

7. Unilateral coplanarity zone applies to the exposed heat sink slug as well as the terminals.

Symbol

Min

Typ

Max

Notes

A

0.70

0.75

0.80

1, 2

A1

0.00

0.02

0.05

1, 2

L

0.45

0.55

0.65

1, 2

L1

0.03

0.15

1, 2

K0.20

1, 2

aaa0.101, 2

bbb0.101, 2

ccc

0.10

1, 2

ddd0.051, 2

Symbol

Min

Typ

Max

Notes

D BSC

4.00

1, 2

E BSC

4.00

1, 2

D2

2.00

2.15

2.25

1, 2

E2

2.00

2.15

2.25

1, 2

b

0.25

0.30

0.35

1, 2, 5

e0.65

N16

1, 2

ND

4

1, 2, 5