STA1295 datasheet(105/109 Pages) STMICROELECTRONICS

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DS12586 Rev 5

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STA1295, STA1275

Package information

106

Table 74. LFBGA529 package mechanical data

Ref

Dimensions

Millimeters

Inches(1)

1. Values in inches are converted from mm and rounded to 4 decimal digits.

Min.

Typ.

Max.

Min.

Typ.

Max.

A(2)

2. FPBGA stands for Fine Pitch Plastic Ball Grid Array:

Low Profile: the total profile height (Dim A) is measured from the seating plane to the top of the component:

1.20 mm < A

≤ 1.70 mm / fine pitch: e < 1.00 mm pitch.

The maximum total package height is calculated by the following methodology:

Amax = A1 Typ + A2 Typ + A4 Typ +

√ (A12 + A22 + A42 tolerance values).

—

1.70

—

0.0669

0.25

—

0.0098

—

0.28

—

0.0110

—

0.80

—

0.0315

b(3)

3. The typical ball diameter before mounting is 0.40 mm.

0.35

0.40

0.48

0.0138

0.0157

0.0189

18.85

19.00

19.15

0.7421

0.7480

0.7539

—

17.60

—

0.6929

—

18.85

19.00

19.15

0.7421

0.7480

0.7539

—

17.60

—

0.6929

—

0.80

—

0.0315

—

0.70

—

0.0276

—

ddd

—

0.10

—

0.0039

eee(4)

4. The tolerance of position that controls the location of the pattern of balls with respect to datums A and B.

For each ball there is a cylindrical tolerance zone eee perpendicular to datum C and located on true

position with respect to datums A and B as defined by e. The axis perpendicular to datum C of each ball

must lie within this tolerance zone.

—

0.15

—

0.0059

fff(5)

5. The tolerance of position that controls the location of the balls within the matrix with respect to each other.

For each ball there is a cylindrical tolerance zone fff perpendicular to datum C and located on true position

as defined by e. The axis perpendicular to datum C of each ball must lie within this tolerance zone. Each

tolerance zone fff in the array is contained entirely in the respective zone eee above. The axis of each ball

must lie simultaneously in both tolerance zones.

—

0.08

—

0.0031

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