L9800 datasheet(49/55 Pages) STMICROELECTRONICS

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Table 19. TFQFN24 4x4x0.9 wettable flanks mechanical data

Symbol

Dimensions

Min.

Typ.

Max.

A(1)

0.80

0.90

1.00

A1(2)

0.00

0.02

0.05

0.20 REF

0.1

b(1)(3)

0.20

0.25

0.30

D(1)

4.00

2.75

2.80

2.85

e(1)

0.50

E(1)

4.00

2.75

2.80

2.85

L(1)

0.35

0.40

0.45

0.25

N(4)

Form and position tolerances

aaa(1)(5)

0.15

bbb(1)(5)

0.10

ccc(1)(5)

0.08

ddd(1)(5)

0.05

eee(1)(5)

0.10

1. To be determined at setting datum plane C.

2. A1 is defined as the distance from the seating plane to the lowest point on the package body.

3. Dimension “b” does not include dambar protrusion. Allowable dambar protrusion shall not cause the lead width to exceed

the maximum “b” dimension by more than 0.08 mm. Dambar cannot be located on the lower radius or the foot. Minimum

space between protrusion and an adjacent lead is 0.07 mm for 0.4 mm and 0.5 mm pitch packages.

4. “N” is the maximum number of terminal positions for the specified body size.

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

L9800

Package information

DS14041 - Rev 2

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